This is a list of seas of the

World Ocean The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian, Antarctic/Southern, and ...

, including marginal seas, areas of water, various

gulf A gulf is a large inlet from an ocean or their seas into a landmass, larger and typically (though not always) with a narrower opening than a bay (geography), bay. The term was used traditionally for large, highly indented navigable bodies of s ...

s, bights, bays, and

strait A strait is a water body connecting two seas or water basins. The surface water is, for the most part, at the same elevation on both sides and flows through the strait in both directions, even though the topography generally constricts the ...

s. In many cases it is a matter of tradition for a body of water to be named a sea or a bay, etc., therefore all these types are listed here. Entities called "seas" which are not divisions of the World Ocean are not included in this list, nor are

Ocean gyre In oceanography, a gyre () is any large system of ocean surface currents moving in a circular fashion driven by wind movements. Gyres are caused by the Coriolis effect; planetary vorticity, horizontal friction and vertical friction determine t ...

Terminology

Ocean The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian Ocean, Indian, Southern Ocean ...

– the four to seven largest named bodies of water in the World Ocean, all of which have "Ocean" in the name . *

Sea A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the interconnected body of seawaters that spans most of Earth. Particular seas are either marginal seas, second-order section ...

has several definitions: ** A division of an ocean, delineated by landforms, currents (e.g.,

Sargasso Sea The Sargasso Sea () is a region of the Atlantic Ocean bounded by four currents forming an ocean gyre. Unlike all other regions called seas, it is the only one without land boundaries. It is distinguished from other parts of the Atlantic Oc ...

), or specific latitude or longitude boundaries. This includes but is not limited to marginal seas, and this is the definition used for inclusion in this list. ** A marginal sea is a division of an ocean, partially enclosed by

island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...

archipelago An archipelago ( ), sometimes called an island group or island chain, is a chain, cluster, or collection of islands. An archipelago may be in an ocean, a sea, or a smaller body of water. Example archipelagos include the Aegean Islands (the o ...

s, or

peninsula A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula. Etymology The word ''peninsula'' derives , . T ...

s, adjacent to or widely open to the open ocean at the surface, and/or bounded by submarine ridges on the sea floor. ** The World Ocean. For example, the

Law of the Sea Law of the sea (or ocean law) is a body of international law governing the rights and duties of State (polity), states in Ocean, maritime environments. It concerns matters such as navigational rights, sea mineral claims, and coastal waters juris ...

states that all of the World Ocean is "sea", and this is also common usage for "the sea". ** Any large body of water with "Sea" in the name, including lakes. *

River A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

– a narrow strip of water that flows over land from a higher elevation to a lower one *

Tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

– a small river that flows into a larger one *

Estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...

– the piece of a river that flows into the sea or ocean *

Strait A strait is a water body connecting two seas or water basins. The surface water is, for the most part, at the same elevation on both sides and flows through the strait in both directions, even though the topography generally constricts the ...

– a narrow area of water connecting two wider areas of water, also sometimes known as a passage * Channel – usually wider than a strait * Passage – connects waters between islands, also sometimes known as a strait *

Canal Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface ...

– a human-made channel *

Fjard A fjard (, ) is a large open space of water between groups of islands or mainland in archipelagos. Fjards can be found along sea coasts, in freshwater lakes or in rivers. Fjard and fjord were originally the same word, and they generally meant sa ...

– a large open water between groups of islands There are several terms used for bulges of ocean that result from indentations of land, which overlap in definition, and which are not consistently differentiated: * Bay – generic term; though most features with "Bay" in the name are small, some are very large *

Gulf A gulf is a large inlet from an ocean or their seas into a landmass, larger and typically (though not always) with a narrower opening than a bay (geography), bay. The term was used traditionally for large, highly indented navigable bodies of s ...

– a very large bay, often a top-level division of an ocean or sea *

Fjord In physical geography, a fjord (also spelled fiord in New Zealand English; ) is a long, narrow sea inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Antarctica, the Arctic, and surrounding landmasses of the n ...

– a long bay with steep sides, typically formed by a

glacier A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires ...

* Bight – a bay that is typically shallower than a sound *

Sound In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the br ...

– a large, wide bay which is typically deeper than a bight, or a strait *

Cove A cove is a small bay or coastal inlet. They usually have narrow, restricted entrances, are often circular or oval, and are often situated within a larger bay. Small, narrow, sheltered bays, inlets, creek (tidal), creeks, or recesses in a coast ...

– a small, typically sheltered bay with a relatively narrow entrance *

Inlet An inlet is a typically long and narrow indentation of a shoreline such as a small arm, cove, bay, sound, fjord, lagoon or marsh, that leads to an enclosed larger body of water such as a lake, estuary, gulf or marginal sea. Overview In ...

– a narrow and long bay similar to a land peninsula, but adjoining the sea *

Polynya A polynya () is an area of open water surrounded by sea ice. It is now used as a geographical term for an area of unfrozen seawater within otherwise contiguous pack ice or fast ice. It is a loanword from the Russian language, Russian (), whic ...

– least used of these terms, a patch of water surrounded by ice Many features could be considered to be more than one of these, and all of these terms are used in

place names Toponymy, toponymics, or toponomastics is the study of '' toponyms'' (proper names of places, also known as place names and geographic names), including their origins, meanings, usage, and types. ''Toponym'' is the general term for a proper nam ...

inconsistently; especially bays, gulfs, and bights, which can be very large or very small. This list includes large areas of water no matter the term used in the name.

Largest seas by area

The largest terrestrial seas, in decreasing order of area, are: #

Philippine Sea The Philippine Sea is a List of seas#Marginal seas by ocean, marginal sea of the Pacific Ocean, Western Pacific Ocean east of the list of islands of the Philippines, Philippine Archipelago (hence the name) and the List of seas#Largest seas ...

– #

Coral Sea The Coral Sea () is a marginal sea of the Pacific Ocean, South Pacific off the northeast coast of Australia, and classified as an Interim Biogeographic Regionalisation for Australia, interim Australian bioregion. The Coral Sea extends down t ...

– #

American Mediterranean Sea The American Mediterranean Sea is a scientific name for the mediterranean dilution basin that includes the Caribbean Sea and the Gulf of Mexico. The name, which has been employed particularly by German oceanographers, is not recognized by the ...

– #

Arabian Sea The Arabian Sea () is a region of sea in the northern Indian Ocean, bounded on the west by the Arabian Peninsula, Gulf of Aden and Guardafui Channel, on the northwest by Gulf of Oman and Iran, on the north by Pakistan, on the east by India, and ...

– #

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...

– #

Weddell Sea The Weddell Sea is part of the Southern Ocean and contains the Weddell Gyre. Its land boundaries are defined by the bay formed from the coasts of Coats Land and the Antarctic Peninsula. The easternmost point is Cape Norvegia at Princess Martha C ...

– #

Caribbean Sea The Caribbean Sea is a sea of the Atlantic Ocean, North Atlantic Ocean in the tropics of the Western Hemisphere, located south of the Gulf of Mexico and southwest of the Sargasso Sea. It is bounded by the Greater Antilles to the north from Cuba ...

– #

Mediterranean Sea The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...

– #

Gulf of Guinea The Gulf of Guinea (French language, French: ''Golfe de Guinée''; Spanish language, Spanish: ''Golfo de Guinea''; Portuguese language, Portuguese: ''Golfo da Guiné'') is the northeasternmost part of the tropical Atlantic Ocean from Cape Lopez i ...

– #

Tasman Sea The Tasman Sea is a marginal sea of the South Pacific Ocean, situated between Australia and New Zealand. It measures about across and about from north to south. The sea was named after the Dutch explorer Abel Janszoon Tasman, who in 1642 wa ...

– #

Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean. Geographically it is positioned between the Indian subcontinent and the Mainland Southeast Asia, Indochinese peninsula, located below the Bengal region. Many South Asian and Southe ...

– #

Bering Sea The Bering Sea ( , ; rus, Бе́рингово мо́ре, r=Béringovo móre, p=ˈbʲerʲɪnɡəvə ˈmorʲe) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasse ...

– #

Sea of Okhotsk The Sea of Okhotsk; Historically also known as , or as ; ) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands on the southeast, Japan's island of Hokkaido on the sou ...

– #

Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...

– #

Gulf of Alaska The Gulf of Alaska ( Tlingit: ''Yéil T'ooch’'') is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the ...

– #

Barents Sea The Barents Sea ( , also ; , ; ) is a marginal sea of the Arctic Ocean, located off the northern coasts of Norway and Russia and divided between Norwegian and Russian territorial waters.World Wildlife Fund, 2008. It was known earlier among Russi ...

– #

Norwegian Sea The Norwegian Sea (; ; ) is a marginal sea, grouped with either the Atlantic Ocean or the Arctic Ocean, northwest of Norway between the North Sea and the Greenland Sea, adjoining the Barents Sea to the northeast. In the southwest, it is separate ...

– #

East China Sea The East China Sea is a marginal sea of the Western Pacific Ocean, located directly offshore from East China. China names the body of water along its eastern coast as "East Sea" (, ) due to direction, the name of "East China Sea" is otherwise ...

– #

Hudson Bay Hudson Bay, sometimes called Hudson's Bay (usually historically), is a large body of Saline water, saltwater in northeastern Canada with a surface area of . It is located north of Ontario, west of Quebec, northeast of Manitoba, and southeast o ...

– # Greenland Sea – # Somov Sea – # Mar de Grau – # Riiser-Larsen Sea – #

Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it ...

– #

Argentine Sea The Argentine Sea () is a marginal sea of the Atlantic Ocean adjacent to the southern tip of South America. It ranges from the mouth of the estuary of the Río de la Plata in the north (35th parallel south) to the Isla de los Estados in the south, ...

– #

East Siberian Sea The East Siberian Sea (; ) is a marginal sea in the Arctic Ocean. It is located between the Arctic Cape to the north, the coast of Siberia to the south, the New Siberian Islands to the west and Cape Billings, close to Chukchi Peninsula, Chukotka, ...

– # Lazarev Sea – #

Kara Sea The Kara Sea is a marginal sea, separated from the Barents Sea to the west by the Kara Strait and Novaya Zemlya, and from the Laptev Sea to the east by the Severnaya Zemlya archipelago. Ultimately the Kara, Barents and Laptev Seas are all ...

– #

Scotia Sea The Scotia Sea is a sea located at the northern edge of the Southern Ocean at its boundary with the South Atlantic Ocean. It is bounded on the west by the Drake Passage and on the north, east, and south by the Scotia Arc, an undersea ridge and is ...

– #

Labrador Sea The Labrador Sea (; ) is an arm of the North Atlantic Ocean between the Labrador Peninsula and Greenland. The sea is flanked by continental shelf, continental shelves to the southwest, northwest, and northeast. It connects to the north with Baffi ...

– #

Andaman Sea The Andaman Sea (historically also known as the Burma Sea) is a marginal sea of the northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and the west side of the Malay Peninsula, and separated f ...

– # Laccadive Sea – # Irminger Sea – # Solomon Sea – #

Mozambique Channel The Mozambique Channel (, , ) is an arm of the Indian Ocean located between the Southeast African countries of Madagascar and Mozambique. The channel is about long and across at its narrowest point, and reaches a depth of about off the coa ...

– # Cosmonauts Sea – #

Banda Sea The Banda Sea (, , ) is one of four seas that surround the Maluku Islands of Indonesia, connected to the Pacific Ocean, but surrounded by hundreds of islands, including Timor, as well as the Halmahera Sea, Halmahera and Ceram Seas. It is about ...

– #

Baffin Bay Baffin Bay (Inuktitut: ''Saknirutiak Imanga''; ; ; ), located between Baffin Island and the west coast of Greenland, is defined by the International Hydrographic Organization as a marginal sea of the Arctic Ocean. It is sometimes considered a s ...

– #

Laptev Sea The Laptev Sea () is a marginal sea of the Arctic Ocean. It is located between the northern coast of Siberia, the Taimyr Peninsula, Severnaya Zemlya, and the New Siberian Islands. Its northern boundary passes from the Arctic Cape to a point with ...

– #

Arafura Sea The Arafura Sea (or Arafuru Sea) lies west of the Pacific Ocean, overlying the continental shelf between Australia and Western New Guinea (also called Papua), which is the Indonesian part of the Island of New Guinea. Geography The Arafura Sea is ...

– #

Ross Sea The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who ...

– #

Chukchi Sea The Chukchi Sea (, ), sometimes referred to as the Chuuk Sea, Chukotsk Sea or the Sea of Chukotsk, is a marginal sea of the Arctic Ocean. It is bounded on the west by the Long Strait, off Wrangel Island, and in the east by Point Barrow, Alaska, ...

– #

Timor Sea The Timor Sea (, , or ) is a relatively shallow sea in the Indian Ocean bounded to the north by the island of Timor with Timor-Leste to the north, Indonesia to the northwest, Arafura Sea to the east, and to the south by Australia. The Sunda Tr ...

– #

North Sea The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Se ...

– # Bellingshausen Sea – #

Beaufort Sea The Beaufort Sea ( ; ) is a marginal sea of the Arctic Ocean, located north of the Northwest Territories, Yukon, and Alaska, and west of the Canadian Arctic Archipelago. The sea is named after Sir Francis Beaufort, a Hydrography, hydrographer. T ...

– #

Red Sea The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...

– #

Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...

– #

Gulf of Aden The Gulf of Aden (; ) is a deepwater gulf of the Indian Ocean between Yemen to the north, the Arabian Sea to the east, Djibouti to the west, and the Guardafui Channel, the Socotra Archipelago, Puntland in Somalia and Somaliland to the south. ...

– #

Yellow Sea The Yellow Sea, also known as the North Sea, is a marginal sea of the Western Pacific Ocean located between mainland China and the Korean Peninsula, and can be considered the northwestern part of the East China Sea. Names It is one of four ...

– #

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...

– #

Caspian Sea The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...

– #

Libyan Sea The Libyan Sea (; ; ) is the portion of the Mediterranean Sea north of the North Africa, African coast of Ancient Libya, ancient ''Libya'', i.e. Cyrenaica, and Marmarica (the coast of what is now Butnan District, eastern Libya and Matrouh Gov ...

– #

Mawson Sea Mawson Sea is a proposed sea name along the Queen Mary Land coast of East Antarctica east of the Shackleton Ice Shelf. West of it, on the western side of Shackleton Ice Shelf, would be the Davis Sea. To the east would be Bowman Island and Vincenne ...

– # Levantine Sea – #

Java Sea The Java Sea (, ) is an extensive shallow sea on the Sunda Shelf, between the Indonesian islands of Borneo to the north, Java to the south, Sumatra to the west, and Sulawesi to the east. Karimata Strait to its northwest links it to the South Ch ...

– #

Gulf of Thailand The Gulf of Thailand (), historically known as the Gulf of Siam (), is a shallow inlet adjacent to the southwestern South China Sea, bounded between the southwestern shores of the Indochinese Peninsula and the northern half of the Malay Peninsula. ...

– #

Celtic Sea The Celtic Sea is the area of the Atlantic Ocean off the southern coast of Ireland bounded to the north by St George's Channel, Saint George's Channel; other limits include the Bristol Channel, the English Channel, and the Bay of Biscay, as wel ...

– #

Gulf of Carpentaria The Gulf of Carpentaria is a sea off the northern coast of Australia. It is enclosed on three sides by northern Australia and bounded on the north by the eastern Arafura Sea, which separates Australia and New Guinea. The northern boundary ...

– # Celebes Sea – #

Tyrrhenian Sea The Tyrrhenian Sea (, ; or ) , , , , is part of the Mediterranean Sea off the western coast of Italy. It is named for the Tyrrhenians, Tyrrhenian people identified with the Etruscans of Italy. Geography The sea is bounded by the islands of C ...

– #

Sulu Sea The Sulu Sea (; Tausug: ''Dagat sin Sūg''; ; ) is a body of water in the southwestern area of the Philippines, separated from the South China Sea in the northwest by Palawan and from the Celebes Sea in the southeast by the Sulu Archipela ...

– # Cooperation Sea – #

Persian Gulf The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...

– #

Flores Sea The Flores Sea covers of water in Indonesia. The sea is bounded on the north by the island of Celebes and on the south by Sunda Islands, the Sunda Islands of Flores and Sumbawa. Geography The seas that border the Flores Sea are the Bali Sea ...

– # Gulf of St. Lawrence – #

Bay of Biscay The Bay of Biscay ( ) is a gulf of the northeast Atlantic Ocean located south of the Celtic Sea. It lies along the western coast of France from Point Penmarc'h to the Spanish border, and along the northern coast of Spain, extending westward ...

– #

Aegean Sea The Aegean Sea is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans and Anatolia, and covers an area of some . In the north, the Aegean is connected to the Marmara Sea, which in turn con ...

– # Gulf of Anadyr – #

Molucca Sea The Molucca Sea (Indonesian language, Indonesian: ''Laut Maluku'') is located in the western Pacific Ocean, around the vicinity of Indonesia, specifically bordered by the Indonesian Islands of Sulawesi, Celebes (Sulawesi) to the west, Halmahera t ...

– # Oman Sea – #

Ionian Sea The Ionian Sea (, ; or , ; , ) is an elongated bay of the Mediterranean Sea. It is connected to the Adriatic Sea to the north, and is bounded by Southern Italy, including Basilicata, Calabria, Sicily, and the Salento peninsula to the west, ...

– #

Gulf of California The Gulf of California (), also known as the Sea of Cortés (''Mar de Cortés'') or Sea of Cortez, or less commonly as the Vermilion Sea (''Mar Vermejo''), is a marginal sea of the Pacific Ocean that separates the Baja California peninsula from ...

– #

Balearic Sea The Balearic Sea ( endotoponym: ''Mar Balear'' in Catalan and Spanish) also known as Iberian Sea, is a body of water in the Mediterranean Sea between the Balearic Islands and mainland Spain. The Ebro River flows into this small sea. Islands a ...

– #

Adriatic Sea The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Se ...

–

Marginal seas by ocean

Seas may be considered marginal between ocean and land, or between oceans in which case they may be treated as marginal parts of either. There is no single ultimate authority on the matter. IrishSeaReliefmap

Arctic Ocean

(clockwise from 180°) *

(connected to the

by the

Kara Strait The Kara Strait or Kara Gates () is a wide channel of water between the southern end of Novaya Zemlya and the northern tip of Vaygach Island. This strait connects the Kara Sea and the Barents Sea in northern Russia. Hydrography and climate T ...

) ** Pechora Sea **

White Sea The White Sea (; Karelian language, Karelian and ; ) is a southern inlet of the Barents Sea located on the northwest coast of Russia. It is surrounded by Karelia to the west, the Kola Peninsula to the north, and the Kanin Peninsula to the nort ...

Queen Victoria Sea The Queen Victoria Sea (, ''Morye Korolevy Viktorii'') is a body of water in the Arctic Ocean, stretching from northeast of Svalbard to northwest Franz Josef Land. It is obstructed by ice most of the year. This sea is named after Queen Victoria. ...

Wandel Sea The Wandel Sea (; also known as McKinley Sea) is a body of water in the Greenland Sea, stretching from northeast of Greenland to Svalbard. It is obstructed by ice most of the year. This sea is named after Danish polar explorer and hydrographer, ...

* Greenland Sea * Lincoln Sea (recognized by the

IHO The International Hydrographic Organization (IHO) (French: ''Organisation Hydrographique Internationale'') is an intergovernmental organization representing hydrography. the IHO comprised 102 member states. A principal aim of the IHO is to e ...

but not the IMO) *

* The Northwest Passages ** Prince Gustaf Adolf Sea **

Amundsen Gulf Amundsen Gulf is a gulf located mainly in the Inuvik Region, Northwest Territories, Canada with a small section in the Kitikmeot Region of Nunavut. It lies between Banks Island and Victoria Island (Canada), Victoria Island and the mainland. It i ...

** Foxe Basin *** Bowman Bay ** Wager Bay ** Roes Welcome Sound ** Foxe Channel ** Bay of Gods Mercy **

Hudson Strait Hudson Strait () in Nunavut links the Atlantic Ocean and the Labrador Sea to Hudson Bay in Canada. This strait lies between Baffin Island and Nunavik, with its eastern entrance marked by Cape Chidley in Newfoundland and Labrador and Nunavut ...

*** Ungava Bay ** Native Bay ** Evans Strait ** Fisher Strait **

James Bay James Bay (, ; ) is a large body of water located on the southern end of Hudson Bay in Canada. It borders the provinces of Quebec and Ontario, and is politically part of Nunavut. Its largest island is Akimiski Island. Numerous waterways of the ...

Atlantic Ocean

In addition to the marginal seas listed in the three subsections below, the

Arctic Ocean The Arctic Ocean is the smallest and shallowest of the world's five oceanic divisions. It spans an area of approximately and is the coldest of the world's oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, ...

itself is sometimes also considered a marginal sea of the Atlantic.

Africa and Eurasia

Kattegat The Kattegat (; ; ) is a sea area bounded by the peninsula of Jutland in the west, the Danish straits islands of Denmark and the Baltic Sea to the south and the Swedish provinces of Bohuslän, Västergötland, Halland and Scania in Swede ...

Skagerrak The Skagerrak (; , , ) is a strait running between the North Jutlandic Island of Denmark, the east coast of Norway and the west coast of Sweden, connecting the North Sea and the Kattegat sea. The Skagerrak contains some of the busiest shipping ...

Wadden Sea The Wadden Sea ( ; ; or ; ; ; ) is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern continental Europe and the range of low-lying Frisian Islands, forming a shallow body of water with tida ...

Dogger Bank Dogger Bank ( Dutch: ''Doggersbank'', German: ''Doggerbank'', Danish: ''Doggerbanke'') is a large sandbank in a shallow area of the North Sea about off the east coast of England. During the last ice age, the bank was part of a large landmass ...

Gulf of Bothnia The Gulf of Bothnia (; ; ) is divided into the Bothnian Bay and the Bothnian Sea, and it is the northernmost arm of the Baltic Sea, between Finland's west coast ( East Bothnia) and the northern part of Sweden's east coast ( West Bothnia an ...

** Kvarken **

Bothnian Sea The Bothnian Sea (; ) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic Sea, Baltic proper. Kvarken is situated between the two. Together, the Bothnian Sea and Bay make up a larger geographical entity, the Gulf of Bothnia, ...

** South Kvarken **

Sea of Åland The Åland Sea (or the Sea of Åland; , ) is a waterway in the southern Gulf of Bothnia, between Åland and Sweden. It connects the Bothnian Sea with the Baltic Proper, Baltic Sea proper. The western part of the basin is in Swedish territorial w ...

Archipelago Sea The Archipelago Sea (, ) is a part of the Baltic Sea between the Gulf of Bothnia, the Gulf of Finland and the Sea of Åland, within Finnish territorial waters. By some definitions it contains the List of archipelagos by number of islands, larges ...

Gulf of Finland The Gulf of Finland (; ; ; ) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and Estonia to the south, to Saint Petersburg—the second largest city of Russia—to the east, where the river Neva drains into it. ...

*** Vyborg Bay ***

Neva Bay The Neva Bay (), also known as the Gulf of Kronstadt, is the easternmost part of the Gulf of Finland between Kotlin Island and the Neva River estuary where Saint Petersburg city centre is located. It has a surface area of . The entire bay has been ...

***

Koporye Bay The Koporye Bay ( Russian: Копорская губа, ''Koporskaya Guba'') is a 12 km-long bay on the southern coast of the Gulf of Finland. It is up to 26 km wide and 20 meters deep. The shore is low and rocky; the hinterland is ...

*** Luga Bay *** Narva Bay ** Väinameri Sea **

Gulf of Riga The Gulf of Riga, Bay of Riga, or Gulf of Livonia (, , ) is a bay of the Baltic Sea between Latvia and Estonia. The island of Saaremaa (Estonia) partially separates it from the rest of the Baltic Sea. The main connection between the gulf and t ...

** Curonian Lagoon **

Vistula Lagoon The Vistula Lagoon is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from the Gdańsk Bay by the Vistula Spit. Geography The lag ...

Gdańsk Bay Gdańsk Bay or the Gulf of Gdańsk is a southeastern bay of the Baltic Sea. It is named after the adjacent port city of Gdańsk in Poland. Geography The western part of Gulf of Gdańsk is formed by the shallow waters of the Bay of Puck. The so ...

** Bay of Pomerania ** Szczecin Lagoon ** Bay of Greifswald *** Rügischer Bodden **

Strelasund The Strelasund or Strela Sound is a sound (geography), sound of the Baltic Sea which separates Rügen from the Germany, German mainland. It is crossed by a bridge called the Strelasund Crossing from Stralsund. It runs northwest to southeast from a ...

** Bay of Lübeck **

Bay of Kiel The Bay of Kiel or Kiel Bay (, ; ) is a bay in the southwestern Baltic Sea, off the shores of Schleswig-Holstein in Germany and the islands of Denmark. It is connected with the Bay of Mecklenburg in the east, the Little Belt in the northwest, ...

** Kalmar Strait ** Bight of Hanö **

Danish straits The Danish straits are the straits connecting the Baltic Sea to the North Sea through the Kattegat and Skagerrak. Historically, the Danish straits were internal waterways of Denmark; however, following territorial losses, Øresund and Fehmarn B ...

*** Oresund Strait ***

Fehmarn Belt Fehmarn Belt () (, former spelling ''Femer Bælt''; ) is a strait connecting the Bay of Kiel and the Bay of Mecklenburg in the western part of the Baltic Sea between the German island of Fehmarn and the Danish island of Lolland. Ferries ...

***

Great Belt The Great Belt (, ) is a strait between the major islands of Zealand (''Sjælland'') and Funen (''Fyn'') in Denmark. It is one of the three Danish Straits. Effectively dividing Denmark in two, the Belt was served by the Great Belt ferries fr ...

***

Little Belt The Little Belt (, ) is a strait between the island of Funen and the Jutland Peninsula in Denmark. It is one of the three Danish straits, Danish Straits that drain and connect the Baltic Sea to the Kattegat strait, which drains west to the Nor ...

English Channel The English Channel, also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busi ...

Strait of Dover The Strait of Dover or Dover Strait, historically known as the Dover Narrows, is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, and separating Great Britain from continental ...

Irish Sea The Irish Sea is a body of water that separates the islands of Ireland and Great Britain. It is linked to the Celtic Sea in the south by St George's Channel and to the Inner Seas off the West Coast of Scotland in the north by the North Ch ...

** Iroise Sea *

Cantabrian Sea The Cantabrian Sea is the term used mostly in Spain to describe the coastal sea of the Atlantic Ocean that borders the northern coast of Spain and the southwest side of the Atlantic coast of France, included in the Bay of Biscay. It extends from ...

* Gulf of Cádiz *

** Alboran Sea **

Bosporus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of Marmara and forms one of the continental bo ...

Dardanelles The Dardanelles ( ; ; ), also known as the Strait of Gallipoli (after the Gallipoli peninsula) and in classical antiquity as the Hellespont ( ; ), is a narrow, natural strait and internationally significant waterway in northwestern Turkey th ...

** Mar Menor ** Balearic (Catalan) Sea *** Gulf of Valencia **

Gulf of Lion The Gulf of Lion or Gulf of Lions is a wide embayment of the Mediterranean coastline of Catalonia in Spain with Languedoc-Roussillon and Provence in France, extending from Begur in the west to Toulon in the east. The chief port on the gulf is ...

*** Étang de Thau **

Ligurian Sea The Ligurian Sea is an arm of the Mediterranean Sea. It lies between the Italian Riviera ( Liguria) and the island of Corsica. The sea is thought to have been named after the ancient Ligures people. Geography The sea borders Italy as far as ...

*** Gulf of Genoa *** Gulf of Saint Florent **

*** Gulf of Follonica ***

Gulf of Gaeta The Gulf of Gaeta is a body of water on the west coast of Italy and part of the Tyrrhenian Sea. It is bounded by Cape Circeo in the north, Ischia and the Gulf of Naples in the south, and the Pontine Islands in the west. The gulf is named for ...

***

Gulf of Naples The Gulf of Naples (), also called the Bay of Naples, is a roughly 15-kilometer-wide (9.3 mi) gulf located along the south-western coast of Italy (Metropolitan City of Naples, Campania region). It opens to the west into the Mediterranean ...

***

Gulf of Salerno The Gulf of Salerno (Italian language, Italian: ''Golfo di Salerno'') is a gulf of the Tyrrhenian Sea in the coast of the province of Salerno in south-western Italy. The northern part of this coast is the Costiera Amalfitana, which ends at Punt ...

*** Gulf of Cagliari ***

Strait of Bonifacio The Strait of Bonifacio (; ; ; ; ; ; ) is the strait between Corsica and Sardinia, named after the Corsican town Bonifacio. It is wide and divides the Tyrrhenian Sea from the western Mediterranean Sea. The strait is notorious among sailors for i ...

***

Strait of Messina The Strait of Messina (; ) is a narrow strait between the eastern tip of Sicily (Punta del Faro) and the western tip of Calabria (Punta Pezzo) in Southern Italy. It connects the Tyrrhenian Sea to the north with the Ionian Sea to the south, with ...

***

Bay of Kotor The Bay of Kotor ( sh-Latn-Cyrl, Boka kotorska, Бока которска, separator=" / ", ), also known as the Boka ( sh-Cyrl, Бока), is a winding bay of the Adriatic Sea in southwestern Montenegro and the region of Montenegro concentrated a ...

*** Kvarner Gulf *** Gulf of Drin *** Gulf of Venice ****

Gulf of Trieste The Gulf of Trieste(, , , ) is a shallow bay of the Adriatic Sea, in the extreme northern part of the Adriatic Sea. It is part of the Gulf of Venice and is shared by Italy, Slovenia and Croatia. It is closed to the south by the peninsula of Ist ...

****

Venetian Lagoon The Venetian Lagoon (; ) is an enclosed bay of the Adriatic Sea, in northern Italy, in which the city of Venice is situated. Its name in the Italian and Venetian languages, ' (cognate of Latin ' ), has provided the English name for an enclosed, ...

*** Gulf of Manfredonia **

***

Gulf of Taranto The Gulf of Taranto (; Tarantino: ; ) is a gulf of the Ionian Sea, in Southern Italy. The Gulf of Taranto is almost square, long and wide, making it the largest gulf in Italy, and it is delimited by the capes Santa Maria di Leuca (to the eas ...

*** Straits of Corfu *** Ambracian Gulf *** Gulf of Patras ***

Gulf of Corinth The Gulf of Corinth or the Corinthian Gulf (, ) is a deep inlet of the Ionian Sea, separating the Peloponnese from western mainland Greece. It is bounded in the east by the Isthmus of Corinth which includes the shipping-designed Corinth Canal and ...

*** Gulf of Kyparissia ***

Messenian Gulf The Messenian Gulf (, ''Messiniakós Kólpos'') is a sea that is part of the Ionian Sea. The gulf is circumscribed by the southern coasts of Messenia and the southwestern coast of the Mani peninsula in Laconia. Its bounds are Venetiko Island ...

***

Laconian Gulf The Laconian Gulf (), is a gulf in the south-eastern Peloponnese, in Greece. It is the southernmost gulf in Greece and the largest in the Peloponnese. In the shape of an inverted "U", it is approximately wide east to west, and long north to so ...

*** Myrtoan Sea ***

Argolic Gulf The Argolic Gulf (), also known as the Gulf of Argolis, is a gulf of the Aegean Sea off the east coast of the Peloponnese, Greece. It is about 50 km long and 30 km wide. Its main port is Nafplio, at its northwestern end. At the entrance ...

***

Saronic Gulf The Saronic Gulf ( Greek: Σαρωνικός κόλπος, ''Saronikós kólpos'') or Gulf of Aegina in Greece is formed between the peninsulas of Attica and Argolis and forms part of the Aegean Sea. It defines the eastern side of the isthmus of C ...

*** Petalioi Gulf ***

South Euboean Gulf The South Euboean Gulf (, ''Notios Evvoïkos Kolpos'') is a gulf in Central Greece, between the island of Euboea and the Greek mainland (Boeotia and Attica Attica (, ''Attikḗ'' (Ancient Greek) or , or ), or the Attic Peninsula, is a h ...

*** North Euboean Gulf *** Malian Gulf *** Pagasetic Gulf ***

Thermaic Gulf The Thermaic Gulf (, ), also called the Gulf of Thessaloniki and the Macedonian Gulf, is a Gulf (geography), gulf constituting the northwest corner of the Aegean Sea. The city of Thessaloniki is at its northeastern tip, and it is bounded by Pie ...

*** Thracian Sea ****

Gulf of Saros Gulf of Saros or Saros Bay () is a gulf north of the Dardanelles, Turkey. Ancient Greeks called it the Gulf of Melas (). The bay is long and wide. Far from industrialized areas and thanks to underwater currents, it is a popular summer recre ...

**** Singitic Gulf ****

Strymonian Gulf The Strymonian or Strymonic Gulf (), also known as the Orfano Gulf (), is a branch of the Thracian Sea—itself part of the Aegean Sea—lying east of the Chalcidice peninsula and south of the Serres regional unit. It was formerly known as the Gul ...

****

Toronean Gulf The Toronean Gulf or Toroneos Gulf () and Toronaic Gulf (), also known as the Kassandra Gulf (), is a gulf of the Thracian Sea, part of the northern Aegean Sea, in Chalkidiki, Greece. It lies between the Kassandra, Chalkidiki, Kassandra peninsul ...

*** Edremit Gulf *** Gulf of İzmir *** Icarian Sea ****

Gulf of Gökova Gulf of Gökova () or Gulf of Kerme (; ; , ; or Gulf of Cos), is a long (100 km), narrow gulf of the Aegean Sea between Bodrum and Datça peninsulas in south-west Turkey. Administratively, the Gulf of Gökova coastline includes portions o ...

*** Carpathian Sea *** Sea of Crete **** Gulf of Chania **** Kissamou Gulf **** Mirabello Bay **** Souda Bay **

Sea of Marmara The Sea of Marmara, also known as the Sea of Marmora or the Marmara Sea, is a small inland sea entirely within the borders of Turkey. It links the Black Sea and the Aegean Sea via the Bosporus and Dardanelles straits, separating Turkey's E ...

***

Gulf of İzmit Gulf of İzmit (), also referred to as İzmit Bay, is a bay at the easternmost edge of the Sea of Marmara, in Kocaeli Province, Turkey. The gulf takes its name from the city of İzmit. Other cities and towns around the bay are Gebze, Körfez, ...

** Levantine Sea *** Gulf of Antalya *** Gulf of Alexandretta **

***

Gulf of Sidra The Gulf of Sidra (), also known as the Gulf of Sirte (), is a body of water in the Mediterranean Sea on the northern coast of Libya, named after the oil port of Sidra or the city of Sirte. It was also historically known as the Great Sirte or G ...

** Gulf of Gabès **

Strait of Sicily The Strait of Sicily (also known as Sicilian Strait, Sicilian Channel, Channel of Sicily, Sicilian Narrows and Pantelleria Channel; or the ; or , ' or ') is the strait between Sicily and Tunisia. The strait is about wide and divides the Ty ...

*** Gulf of Tunis *** Inland Sea, Gozo ** Sea of Sardinia ***

Gulf of Asinara The Gulf of Asinara is a sea sector included between the Asinara Island, Cape Falcone and the town of Castelsardo, in northern Sardinia, Italy. The communes facing its coast include also Stintino, Porto Torres, Sassari, Sorso Sorso () is a ...

Often treated as a part of the

. ** Gulf of Burgas ** Karkinit Bay ** Kalamita Bay **

Sea of Azov The Sea of Azov is an inland Continental shelf#Shelf seas, shelf sea in Eastern Europe connected to the Black Sea by the narrow (about ) Strait of Kerch, and sometimes regarded as a northern extension of the Black Sea. The sea is bounded by Ru ...

*** Syvash *** Taganrog Bay * Bay of Arguin ** Dakhlet Nouadhibou * Yawri Bay *

Bight of Benin The Bight of Benin, or Bay of Benin, is a bight in the Gulf of Guinea area on the western African coast that derives its name from the historical Kingdom of Benin. Geography The Bight of Benin was named after the Kingdom of Benin. It extends ea ...

Bight of Biafra The Bight of Biafra, also known as the Bight of Bonny, is a bight off the west- central African coast, in the easternmost part of the Gulf of Guinea. This "bight" has also sometimes been erroneously referred to as the "Bight of Africa" because ...

*** Corisco Bay * Luanda Bay *

Walvis Bay Walvis Bay (; ; ) is a city in Namibia and the name of the bay on which it lies. It is the List of cities in Namibia, second largest city in Namibia and the largest coastal city in the country. The city covers an area of of land. The bay is a ...

Saldanha Bay Saldanha Bay () is a natural harbour on the south-western coast of South Africa. The town that developed on the northern shore of the bay, also called Saldanha, Western Cape, Saldanha, was incorporated with five other towns into the Saldanha Bay ...

* Table Bay *

False Bay False Bay (Afrikaans: ''Valsbaai'') is a body of water in the Atlantic Ocean between the mountainous Cape Peninsula and the Hottentots Holland Mountains in the extreme south-west of South Africa. The mouth of the bay faces south and is demarc ...

Americas

(coast-wise from north to south) *

North Water Polynya The North Water Polynya (NOW), or ''Pikialasorsuaq'' to Inuit in Greenland and ''Sarvarjuaq'' to Inuit in Canada, is a polynya (area of year-round open water surrounded by sea ice) that lies between Greenland and Canada in northern Baffin Bay. ...

Davis Strait The Davis Strait (Danish language, Danish: ''Davisstrædet'') is a southern arm of the Arctic Ocean that lies north of the Labrador Sea. It lies between mid-western Greenland and Baffin Island in Nunavut, Canada. To the north is Baffin Bay. The ...

** Home Bay *

** Cumberland Sound **

Frobisher Bay Frobisher Bay is an inlet of the Davis Strait in the Qikiqtaaluk Region of Nunavut, Canada. It is located in the southeastern corner of Baffin Island. Its length is about and its width varies from about at its outlet into the Davis Strait ...

* Gulf of St. Lawrence *

Gulf of Maine The Gulf of Maine is a large gulf of the Atlantic Ocean on the east coast of North America. It is bounded by Cape Cod at the eastern tip of Massachusetts in the southwest and by Cape Sable Island at the southern tip of Nova Scotia in the northea ...

Bay of Fundy The Bay of Fundy () is a bay between the Canadian provinces of New Brunswick and Nova Scotia, with a small portion touching the U.S. state of Maine. It is an arm of the Gulf of Maine. Its tidal range is the highest in the world. The bay was ...

Massachusetts Bay Massachusetts Bay is a bay on the Gulf of Maine that forms part of the central coastline of Massachusetts. Description The bay extends from Cape Ann on the north to Plymouth Harbor on the south, a distance of about . Its northern and sout ...

Cape Cod Bay Cape Cod Bay is a large bay of the Atlantic Ocean adjacent to the U.S. state of Massachusetts. Measuring below a line drawn from Brant Rock in Marshfield to Race Point in Provincetown, Massachusetts, it is enclosed by Cape Cod to the south ...

* Nantucket Sound *

Vineyard Sound Vineyard Sound is the stretch of the Atlantic Ocean which separates the Elizabeth Islands and the southwestern part of Cape Cod from the island of Martha's Vineyard, located offshore from the state of Massachusetts Massachusetts ( ; ), ...

Buzzards Bay Buzzards Bay is a bay of the Atlantic Ocean adjacent to the U.S. state of Massachusetts. It is approximately 28 miles (45 kilometers) long by 8 miles (12 kilometers) wide. It is a popular destination for fishing, boating, and tourism. Buzzards ...

Narragansett Bay Narragansett Bay is a bay and estuary on the north side of Rhode Island Sound covering , of which is in Rhode Island. The bay forms New England's largest estuary, which functions as an expansive natural harbor and includes a small archipelago. S ...

* Rhode Island Sound *

Block Island Sound Block Island Sound is a marine sound in the open Atlantic Ocean, approximately wide, separating Block Island from the coast of mainland Rhode Island. On the west, it extends to Montauk Point on the eastern tip of Long Island, as well as P ...

* Fishers Island Sound *

Long Island Sound Long Island Sound is a sound (geography), marine sound and tidal estuary of the Atlantic Ocean. It lies predominantly between the U.S. state of Connecticut to the north and Long Island in New York (state), New York to the south. From west to east, ...

** Shelter Island Sound ** Noyack Bay **

Peconic Bay The Peconic Bay is the parent name for two bays (Great Peconic Bay and Little Peconic Bay) between the North Fork, Suffolk County, New York, North Fork and South Fork, Suffolk County, New York, South Fork of Long Island in Suffolk County, New Yor ...

** Gardiners Bay ** Tobaccolot Bay ** Sag Harbor Bay ** Three Mile Harbor ** Long Beach Bay ** Pipes Cove ** Southold Bay ** Flanders Bay ** Napeague Bay ** Fort Pond Bay ** North Sea Harbor *

New York Bay New York Bay is the large tidal body of water in the New York–New Jersey Harbor Estuary where the Hudson River, Raritan River, and Arthur Kill empty into the Atlantic Ocean between Sandy Hook, New Jersey, Sandy Hook and Rockaway Point. Geogr ...

Upper New York Bay New York Harbor is a bay that covers all of the Upper Bay. It is at the mouth of the Hudson River near the East River tidal estuary on the East Coast of the United States. New York Harbor is generally synonymous with Upper New York Bay ...

** Lower New York Bay *

Jamaica Bay Jamaica Bay (also known as Grassy Bay) is an estuary on the southern portion of the western tip of Long Island, in the U.S. state of New York (state), New York. The estuary is partially man-made, and partially natural. The bay connects with Lo ...

Raritan Bay Raritan Bay is a bay located at the southern portion of Lower New York Bay between the U.S. states of New York and New Jersey and is part of the New York Bight. The bay is bounded on the northwest by New York's Staten Island, on the west b ...

* Sandy Hook Bay *

Delaware Bay Delaware Bay is the estuary outlet of the Delaware River on the northeast seaboard of the United States, lying between the states of Delaware and New Jersey. It is approximately in area, the bay's freshwater mixes for many miles with the saltw ...

Chesapeake Bay The Chesapeake Bay ( ) is the largest estuary in the United States. The bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Ea ...

Albemarle Sound Albemarle Sound () is a large estuary on the coast of North Carolina in the United States located at the confluence of a group of rivers, including the Chowan River, Chowan and Roanoke River, Roanoke. It is separated from the Atlantic Ocean b ...

Pamlico Sound Pamlico Sound ( ) is a large estuarine lagoon in North Carolina. The largest lagoon along the North American East Coast, it extends long and wide. It is part of a large, interconnected network of similar lagoons that includes Albemarle Sou ...

***

Florida Bay Florida Bay is the bay located between the southern end of the Florida mainland (the Everglades, Florida Everglades) and the Florida Keys in the United States. It is a large, shallow estuary that while connected to the Gulf of Mexico, has limited ...

***

Tampa Bay Tampa Bay is a large natural harbor and shallow estuary connected to the Gulf of Mexico on the west-central coast of Florida, comprising Hillsborough Bay, McKay Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay. The largest freshwater i ...

*** Charlotte Harbor Estuary *** Pensacola Bay ***

Mobile Bay Mobile Bay ( ) is a shallow inlet of the Gulf of Mexico, lying within the state of Alabama in the United States. Its mouth is formed by the Fort Morgan Peninsula on the eastern side and Dauphin Island, a barrier island on the western side. T ...

*** Vermilion Bay *** Galveston Bay *** Bay of Campeche **

Old Bahama Channel The Old Bahama Channel () is a strait of the Caribbean region, between Cuba and the Bahamas The Bahamas, officially the Commonwealth of The Bahamas, is an archipelagic and island country within the Lucayan Archipelago of the Atlantic Oce ...

*** Gulf of Gonâve (

Haiti Haiti, officially the Republic of Haiti, is a country on the island of Hispaniola in the Caribbean Sea, east of Cuba and Jamaica, and south of the Bahamas. It occupies the western three-eighths of the island, which it shares with the Dominican ...

) *** Gulf of Honduras *** Golfo de los Mosquitos ***

Gulf of Venezuela The Gulf of Venezuela is a gulf of the Caribbean Sea bounded by the Venezuelan states of Zulia and Falcón and by La Guajira Department, Colombia. The western side is formed by the Guajira Peninsula. A strait connects it with Maracaibo Lake to ...

****

Lake Maracaibo Lake Maracaibo () is located in northwestern Venezuela, between the states of Zulia, Trujillo, and Mérida. While Maracaibo is commonly referred to as a lake, its current hydrological characteristics may better classify it as estuary and/or ...

***

Gulf of Paria The Gulf of Paria ( ; ) is a shallow ( at its deepest) semi-enclosed inland sea located between the island of Trinidad and the east coast of Venezuela. It separates the two countries by as little as at its narrowest and at its widest points. T ...

*** Gulf of Darién *

Bay of All Saints The Bay of All Saints (), also known as All Saints' Bay and Todos os Santos Bay, is the principal bay of the Brazilian state of Bahia, to which it gave its name. It sits on the Brazilian coast, eastern coast of Brazil, surrounding part of Bahia' ...

Guanabara Bay Guanabara Bay (, , ) is an oceanic bay in Southeast Brazil in the state of Rio de Janeiro (state), Rio de Janeiro. On its western shore lie the cities of Rio de Janeiro (city), Rio de Janeiro and Duque de Caxias, Rio de Janeiro, Duque de Caxias, a ...

Lagoa dos Patos Lagoa (Portuguese for ''lagoon'') may refer to the following: People * Barbara Lagoa, Cuban-American federal judge Places Brazil * Campina da Lagoa, Paraná * Lagoa, Paraíba, Paraíba * Lagoa, Rio de Janeiro, a quarter of Rio de Janeiro * Lagoa ...

** Samborombón Bay ** San Matías Gulf ** Golfo Nuevo **

San Jorge Gulf The San Jorge Gulf (Golfo San Jorge; Spanish language, Spanish for ''Gulf of Saint George, St. George'') is a bay in southern Patagonia, Argentina. It is an ocean basin opening to the Atlantic. Its shoreline spans Chubut Province, Chubut and Santa ...

Northern islands

(from east to west) *

(between

Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...

and

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

) * Inner Seas off the West Coast of Scotland ** Sea of the Hebrides (Great Britain) * Denmark Strait (between

Greenland Greenland is an autonomous territory in the Danish Realm, Kingdom of Denmark. It is by far the largest geographically of three constituent parts of the kingdom; the other two are metropolitan Denmark and the Faroe Islands. Citizens of Greenlan ...

and

Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...

) * Irminger Sea

Indian Ocean

Gulf of Martaban The Gulf of Martaban () or the Gulf of Mottama is an arm of the Andaman Sea in the southern part of Myanmar (Burma). The gulf is named after the port city of Mottama (formerly known as Martaban). The Sittaung, Salween and Yangon rivers empty in ...

– an arm of the Andaman Sea in the southern part of

Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...

* Antongil Bay *

Gulf of Kutch The Gulf of Kutch is located between the peninsula regions of Kutch and Saurashtra, bounded in the state of Gujarat that borders Pakistan. It opens towards the Arabian Sea facing the Gulf of Oman. It is about 50 km wide at the entrance b ...

Gulf of Khambhat The Gulf of Khambhat, also known as the Gulf of Cambay, is a bay on the Arabian Sea coast of India, bordering the state of Gujarat just north of Mumbai and Diu Island. The Gulf of Khambhat is about long, about wide in the north and up to wi ...

** Gulf of Masirah ** Sonmiani Bay *

** Palk Bay ** Palk Strait *

Gulf of Oman The Gulf of Oman or Sea of Oman ( ''khalīj ʿumān''; ''daryâ-ye omân''), also known as Gulf of Makran or Sea of Makran ( ''khalīj makrān''; ''daryâ-ye makrān''), is a gulf in the Indian Ocean that connects the Arabian Sea with th ...

* Laccadive Sea **

Gulf of Mannar The Gulf of Mannar ( ) (; ) is a large shallow bay forming part of the Laccadive Sea in the Indian Ocean with an average depth of .Mafia Channel * Mentawai Strait *

* Pemba Channel *

Clarence Strait (Iran) The Clarence Strait is a narrow strait separating the Iranian island of Qeshm from the Iranian mainland. It is the much smaller counterpart to the Strait of Hormuz. The native name for the strait is Khuran. The Clarence Strait is host to the mos ...

** Kuwait Bay ** Gulf of Bahrain *** Gulf of Salwah **

Strait of Hormuz The Strait of Hormuz ( ''Tangeh-ye Hormoz'' , ''Maḍīq Hurmuz'') is a strait between the Persian Gulf and the Gulf of Oman. It provides the only sea passage from the Persian Gulf to the open ocean and is one of the world's most strategica ...

Bab-el-Mandeb The Bab-el-Mandeb (), the Gate of Grief or the Gate of Tears, is a strait between Yemen on the Arabian Peninsula and Djibouti and Eritrea in the Horn of Africa. It connects the Red Sea to the Gulf of Aden and by extension the Indian Ocean. ...

** Gulf of Suez ** Gulf of Aqaba *

Sea of Zanj The Sea of Zanj (; ) is a former name for the portion of the western Indian Ocean adjacent to the region in the African Great Lakes referred to by medieval Arab geographers as Zanj.

Zanzibar Channel The Zanzibar Channel is a strait in south-eastern Africa, separating the island of Unguja (also known as Zanzibar) from mainland Tanzania. The channel is 120 km long and 29–37 km wide, with depth varying from a few dozen metres (in the ...

Pacific Ocean

Americas

Bristol Bay Bristol Bay (, ) is the easternmost arm of the Bering Sea, at 57° to 59° North 157° to 162° West in Southwest Alaska. Bristol Bay is 400 km (250 mi) long and 290 km (180 mi) wide at its mouth. A number of rivers flow in ...

Norton Sound The Norton Sound ( Inupiaq: ''Imaqpak'') is an inlet of the Bering Sea on the western coast of the U.S. state of Alaska, south of the Seward Peninsula. It is about 240 km (150 mi) long and 200 km (125 mi) wide. The Yukon Riv ...

* Chilean Sea ** Gulf of Corcovado ** Gulf of Penas ** Moraleda Channel **

Reloncaví Sound Reloncaví Sound or ''Seno de Reloncaví'' is a body of water immediately south of Puerto Montt, a port city in the Los Lagos Region of Chile. It is the place where the Chilean Central Valley meets the Pacific Ocean. The Calbuco Archipelago comp ...

** Sea of Chiloé *

Cook Inlet Cook Inlet (; Sugpiaq language, Sugpiaq: ''Cungaaciq'') stretches from the Gulf of Alaska to Anchorage, Alaska, Anchorage in south-central Alaska. Cook Inlet branches into the Knik Arm and Turnagain Arm at its northern end, almost surrounding ...

** Glacier Bay ** Prince William Sound * Gulf of Santa Catalina *

Salish Sea The Salish Sea ( ) is a List of seas on Earth #Terminology, marginal sea of the Pacific Ocean located in the Provinces and territories of Canada, Canadian province of British Columbia and the States of the United States , U.S. state of Washingto ...

(also known as the Sea of Cortés) * Gulf of the Farallones *

Gulf of Fonseca The Gulf of Fonseca (; ), a part of the Pacific Ocean, is a gulf in Central America, bordering El Salvador, Honduras, and Nicaragua. The waters of the gulf are shared among all three countries. History Fonseca Bay was discovered by European ...

Gulf of Guayaquil The Gulf of Guayaquil is a large body of water of the Pacific Ocean in western South America. Its northern limit is the city of Santa Elena, Ecuador, Santa Elena, in Ecuador, and its southern limit is Cabo Blanco, Peru, Cabo Blanco, in Peru. The ...

Gulf of Nicoya The Gulf of Nicoya () is an inlet of the Pacific Ocean. It separates the Nicoya Peninsula from the mainland of Costa Rica, and encompasses a marine and coastal landscape of wetlands, rocky islands and cliffs. The first Spanish landing in Nicaragua ...

* Gulf of Panama **

Bay of San Miguel The Bay of San Miguel or Gulf of San Miguel () is a bay of the Gulf of Panama, located on the Pacific coast of Darién Province in eastern Panama. The bay is located at . The bay is the drainage of the Geography of Panama#Chucunaque-Tuira Basi ...

** Gulf of Parita ** Panama Bay * Grau Sea *

San Francisco Bay San Francisco Bay (Chochenyo language, Chochenyo: 'ommu) is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, California, San ...

San Pablo Bay San Pablo Bay is a tidal estuary that forms the northern extension of the San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California. Most of the Bay is shallow; however, there is a deep wate ...

Australia and Eurasia

* Australasian Mediterranean Sea **

** Balabac Strait ** Bali Sea **

Bali Strait Bali Strait is a stretch of water separating Java and Bali while connecting the Indian Ocean and the Bali Sea. At its narrowest it is wide. Geography The Bali Strait is one of the bodies of water surrounding the island of Bali: Lombok Strait ...

Bangka Strait Bangka Strait is the strait that separates the island of Sumatra from Bangka Island () in the Java Sea, Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, India ...

** Celebes Sea *** Moro Gulf ** Ceram Sea ** Davao Gulf **

** Gaspar Strait **

***

Bandon Bay Bandon Bay (, , ) is a bay in the Gulf of Thailand in Surat Thani Province, extending from the Sui cape in Chaiya District in the northwest to Kanchanadit District to the east. The total coastline is about 100 km. The bay is dominated by ...

***

Bay of Bangkok The Bay of Bangkok (, , , sometimes informally อ่าวตัว ก), also known as the Bight of Bangkok, is the northernmost part of the Gulf of Thailand, roughly extending from Hua Hin District to the west and Sattahip District to the e ...

*** Bay of Kampong Som **

Gulf of Boni __NOTOC__ The Gulf of Boni (), also known as the Gulf of Bone, Bay of Boni, and Bone Bay, is the gulf which divides the South and Southeast Peninsulas of the island of Sulawesi (Celebes) in Indonesia. It opens on the south into the Banda Sea. ...

Gulf of Tomini The Gulf of Tomini (), also known as the Bay of Tomini, is the equatorial gulf which separates the Minahassa (Northern) and East Peninsulas of the island of Sulawesi (Celebes) in Indonesia. The Togian Islands lie near its center. To the east ...

** Halmahera Sea **

** Karimata Strait **

Lombok Strait The Lombok Strait () is a strait of the Bali Sea connecting to the Indian Ocean, and is located between the islands of Bali and Lombok in Indonesia. The Gili Islands are on the Lombok side. Its narrowest point is at its southern opening, with a ...

Madura Strait Madura Strait is a stretch of water that separates the Indonesian islands of Java and Madura, in the province of East Java. The islands of Kambing, Giliraja, Genteng, and Ketapang lie in the Strait. The Suramadu Bridge, the longest in Indones ...

Makassar Strait Makassar Strait () is a strait between the islands of Borneo and Sulawesi in Indonesia. To the north it joins the Celebes Sea, while to the south it meets the Java Sea. To the northeast, it forms the Sangkulirang Bay south of the Mangkalihat P ...

Malacca Strait The Strait of Malacca is a narrow stretch of water, long and from wide, between the Malay Peninsula to the northeast and the Indonesian island of Sumatra to the southwest, connecting the Andaman Sea (Indian Ocean) and the South China Sea (Pa ...

** Mindoro Strait ** Ombai Strait ** Philippine Inland Sea *** Balayan Bay *** Bohol Sea (also known as the Mindanao Sea) *** Camotes Sea ***

Cebu Strait Cebu Strait (Tagalog language, Tagalog: ''Kipot ng Cebú''; also Bohol Strait) is a strait in the Central Visayas region in the Philippines. Geography The Cebu Strait (and its 3 channels, the Mactan Channel, Mactan, the Olango Island Group, Ol ...

*** Guimaras Strait *** Leyte Gulf *** Luzon Sea ***

Manila Bay Manila Bay (; ) is a natural harbor that serves the Port of Manila (on Luzon), in the Philippines. Strategically located around the Manila, capital city of the Philippines, Manila Bay facilitated commerce and trade between the Philippines and ...

*** Ragay Gulf *** Samar Sea **** Carigara Bay ***

San Bernardino Strait The San Bernardino Strait () is a strait in the Philippines, connecting the Samar Sea with the Philippine Sea. It separates the Bicol Peninsula of Luzon from Samar (island), Samar of Visayas. History During an ill-fated expedition, only one ship ...

***

Sibuyan Sea The Sibuyan Sea is a small sea in the Philippines separating Luzon and the Visayas. It is bounded by the island of Panay to the south, Mindoro to the west, Masbate to the east, and to the north Marinduque and the Bicol Peninsula of Luzon. ...

*** Surigao Strait *** Tablas Strait *** Tañon Strait *** Tayabas Bay ***

Visayan Sea The Visayan Sea is a sea in the Philippines surrounded by the islands of the Visayas. It is bounded by the islands Masbate to the north, Panay to the west, Leyte to the east, and Cebu and Negros to the south. The sea is connected to severa ...

** Riau Strait **

Savu Sea The Savu Sea (or the Sawu Sea) (, , ) is a small sea within Indonesia named for the island of Savu (Sawu) on its southern boundary. It is bounded by Savu and Raijua to the south, the islands of Rote and Timor (split between East Timor and ...

*** Chao’an Bay *** Da Nang Bay *** Daya Bay *** Dongshan Bay *** Futou Bay *** Guang’ao Bay *** Guanghai Bay ***

Gulf of Tonkin The Gulf of Tonkin is a gulf at the northwestern portion of the South China Sea, located off the coasts of Tonkin ( northern Vietnam) and South China. It has a total surface area of . It is defined in the west and northwest by the northern co ...

**** Beihai Channel **** Ha Long Bay **** Qinzhou Bay *** Haimen Bay *** Haitang Bay *** Hiechechin Bay *** Honghai Bay *** Huangmao Sea *** Jiuzhouyang **** Deep Bay, China **** East Lamma Channel **** Praia Grande (Macau) **** West Lamma Channel *** Leizhou Bay *** Lingayen Gulf *** Luzon Strait *** Mirs Bay *** Natuna Sea **** North Natuna Sea *** Qiongzhou Strait **** Haikou Bay *** Taiwan Strait **** Meizhou Bay **** Penghu Channel **** Quanzhou Bay **** Weitou Bay **** Xiamen Bay **** Xinghua Bay *** Sanya Bay *** Sun and Moon Bay *** West Philippine Sea *** Yalong Bay *** Zhanjiang Bay *** Zhelin Bay *** Zhenhai Bay ** Straits of Johor *** Singapore Strait **

*** Panay Gulf ** Sunda Strait **

*** Joseph Bonaparte Gulf ** Wetar Strait * Bass Strait * Bay of Plenty * Bismarck Sea *

** Gulf of Papua ** Torres Strait *

** Ariake Sea ** Dinghai Bay ** Fuqing Bay ** Haitan Strait ** Hangzhou Bay ** Jeju Strait ** Kagoshima Bay ** Miyako Strait ** Luoyuan Bay ** Omura Bay ** Osumi Strait ** Tachibana Bay ** Taizhou Bay ** Yatsushiro Sea **

*** Bohai Sea **** Bohai Bay **** Jinzhou Bay **** Laizhou Bay **** Liaodong Bay *** Dalian Bay *** Gyeonggi Bay *** Haizhou Bay *** Jiaozhou Bay *** Laoshan Bay *** Korea Bay *** Sanggou Bay *** Taozi Bay ** Yueqing Bay * Fourth Kuril Strait * Great Australian Bight * Hauraki Gulf * Hawke's Bay * Hitokappu Bay * Koro Sea * Kuril Strait *

** Albay Gulf ** Devil's Sea, Devil's/Dragon's Sea ** Ise Bay *** Mikawa Bay ** Lamon Bay ** Lagonoy Gulf ** San Miguel Bay ** Shibushi Bay ** Suruga Bay ** Sagami Bay ** Tosa Bay ** Tokyo Bay *** Uraga Channel * Poverty Bay *

** East Korea Bay ** Ishikari Bay ** La Pérouse Strait ** Mutsu Bay ** Oki Strait ** Peter the Great Gulf *** Amur Bay *** Nakhodka Bay *** Ussuri Bay ** Sado Strait ** Sōya Bay ** Strait of Tatary ** Strait of Tsushima ** Toyama Bay ** Tsugaru Strait ** Wakasa Bay *

** Aniva Bay ** Gulf of Patience ** Nemuro Strait ** Shantar Sea ** Shelikhov Gulf ** Uda Bay * Seto Inland Sea ** Beppu Bay ** Bungo Channel *** Hoyo Strait ** Kanmon Straits ** Kii Channel ** Kitan Strait ** Naruto Strait ** Osaka Bay * Solomon Sea * Spencer Gulf *

* Uchiura Bay * Vries Strait * Waihau Bay

Southern Ocean

* Amundsen Sea * Bellingshausen Sea * Cooperation Sea * Cosmonauts Sea * Davis Sea * D'Urville Sea * Drake Passage * King Haakon VII Sea * Lazarev Sea *

* McMurdo Sound ** Polynyas in McMurdo Sound * Riiser-Larsen Sea *

* Somov Sea * Spencer Gulf *

** Weddell Polynya/Maud Rise Polynya

Defined by ocean currents

While all other seas in the world are defined at least in part by land boundaries, there is only one sea which is defined only by ocean currents:National Oceanic and Atmospheric Administration – What is the Sargasso Sea?
/ref> *

– a sea defined by the four ocean currents which create the North Atlantic Gyre

Not included

Entities called "seas" which are not divisions of the World Ocean are not included in this list. Excluded are: *Lakes, ponds, etc.: ** Salt lakes with "Sea" in the name: Aral Sea, Dead Sea,

, Salton Sea ** Lake, Freshwater lakes with "Sea" in the name: Sea of Galilee ** Bodies of water identified in lakes (bays, straits, etc.) *

s * Seas in :Fictional oceans and seas, fiction, :Water and religion, religion or :Water in mythology, mythology

Notes

References

External links

* {{Physical oceanography, expanded=other Seas, * Lists of seas, Lists of bodies of water, Seas Marginal seas, Geographic taxonomies Oceanography

Terminology

Largest seas by area

Marginal seas by ocean

Arctic Ocean

Atlantic Ocean

Africa and Eurasia

Americas

Northern islands

Indian Ocean

Pacific Ocean

Americas

Australia and Eurasia

Southern Ocean

Defined by ocean currents

Not included

See also

Notes

References

External links