lies south of

Kanagawa Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Kanagawa Prefecture is the second-most populous prefecture of Japan at 9,221,129 (1 April 2022) and third-densest at . Its geographic area of makes it fifth-smallest. Kana ...

Honshu , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island ...

, central Japan, contained within the scope of the

Miura Peninsula is a peninsula located in Kanagawa, Japan. It lies south of Yokohama and Tokyo and divides Tokyo Bay, to the east, from Sagami Bay, to the west. Cities and towns on the Miura Peninsula include Yokosuka, Miura, Hayama, Zushi, and Kama ...

, in Kanagawa, to the east, the

Izu Peninsula The is a large mountainous peninsula with a deeply indented coastline to the west of Tokyo on the Pacific coast of the island of Honshu, Japan. Formerly known as Izu Province, Izu peninsula is now a part of Shizuoka Prefecture. The peninsu ...

, in

Shizuoka Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Shizuoka Prefecture has a population of 3,637,998 and has a geographic area of . Shizuoka Prefecture borders Kanagawa Prefecture to the east, Yamanashi Prefecture to the north ...

, to the west, and the

Shōnan is the name of a region along the coast of Sagami Bay in Kanagawa Prefecture, central Japan. Centered on Sagami River, about 60 kilometers southwest of Tokyo, the Shōnan region stretches from Ninomiya in the west to Fujisawa in the east, ...

coastline to the north, while the island of

Izu Ōshima is an inhabited volcanic island in the Izu archipelago in the Philippine Sea, off the coast of Honshu, Japan, east of the Izu Peninsula and southwest of Bōsō Peninsula. As with the other islands in the Izu Island group, Izu Ōshima form ...

marks the southern extent of the bay. It lies approximately southwest of the capital,

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...

. Cities on the bay include Odawara, Chigasaki, Fujisawa, Hiratsuka, Itō, and

Kamakura is a city in Kanagawa Prefecture, Japan. Kamakura has an estimated population of 172,929 (1 September 2020) and a population density of 4,359 persons per km² over the total area of . Kamakura was designated as a city on 3 November 1939. Kama ...

History

The center of the

Great Kantō earthquake Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness Greatness is a concept of a state of superior (hierarchy), superiority affecting a person or wikt:entity, object in a par ...

in 1923 was deep beneath

Island in Sagami Bay. It devastated Tokyo, the port city of

Yokohama is the second-largest city in Japan by population and the most populous municipality of Japan. It is the capital city and the most populous city in Kanagawa Prefecture, with a 2020 population of 3.8 million. It lies on Tokyo Bay, south of ...

, and the surrounding prefectures of Chiba,

Kanagawa is a prefecture of Japan located in the Kantō region of Honshu. Kanagawa Prefecture is the second-most populous prefecture of Japan at 9,221,129 (1 April 2022) and third-densest at . Its geographic area of makes it fifth-smallest. Kanagaw ...

, and Shizuoka, and caused widespread damage throughout the Kantō region. The shallow nature of the seabed on the north of the bay, and the funnelling effect of

tsunami A tsunami ( ; from ja, 津波, lit=harbour wave, ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater exp ...

and

typhoon A typhoon is a mature tropical cyclone that develops between 180° and 100°E in the Northern Hemisphere. This region is referred to as the Northwestern Pacific Basin, and is the most active tropical cyclone basin on Earth, accounting for a ...

wave energy, contributed to certain parts of the Shonan coast having suffered considerable damage, including the destruction of the

Kōtoku-in is a Buddhist temple of the Jōdo-shū sect, in the city of Kamakura in Kanagawa Prefecture, Japan. Its mountain name is , and its common temple name is . The temple is renowned for The Great Buddha of Kamakura, a monumental outdoor bronze ...

temple housing the Great Buddha, or Daibutsu during the massive tsunami of 1498.

Natural environment

A branch of the warm

Kuroshio Current The , also known as the Black or or the is a north-flowing, warm ocean current on the west side of the North Pacific Ocean basin. It was named for the deep blue appearance of its waters. Similar to the Gulf Stream in the North Atlantic, the Ku ...

warms the bay, allowing it to host marine organisms typical of more southerly regions and giving a mild climate to the land bordering it. The maximum depth of Sagami Bay is about 1500 meters. Organisms from sub-arctic regions are advected into the bay by intrusions of the Oyashio Current resulting in very high

biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic ('' genetic variability''), species ('' species diversity''), and ecosystem ('' ecosystem diversity' ...

. It is the major study site for research programs at the University of Tokyo (ORI) and the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). In 2004, soil samples from Sagami Bay were found to contain

radioactive contamination Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirab ...

from the

Bikini Atoll Bikini Atoll ( or ; Marshallese: , , meaning "coconut place"), sometimes known as Eschscholtz Atoll between the 1800s and 1946 is a coral reef in the Marshall Islands consisting of 23 islands surrounding a central lagoon. After the Sec ...

nuclear tests that took place from 1946 to 1958.SEPA
The Hikiji River, Sagami River and Sakai River flow into the bay.

References

External links

* } {{Authority control Bays of Japan Landforms of Kanagawa Prefecture Manazuru, Kanagawa Yugawara, Kanagawa