Seram (formerly spelled Ceram; also Seran or Serang) is the largest and main
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 ...
of
Maluku province
A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
of
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
, despite
Ambon Island
Ambon Island is part of the Maluku Islands of Indonesia. The island has an area of and is mountainous, well watered, and fertile. Ambon Island consists of two territories: the city of Ambon, Maluku, Ambon to the south, and three districts (''k ...
's historical importance. It is located just north of the smaller
Ambon Island
Ambon Island is part of the Maluku Islands of Indonesia. The island has an area of and is mountainous, well watered, and fertile. Ambon Island consists of two territories: the city of Ambon, Maluku, Ambon to the south, and three districts (''k ...
and a few other adjacent islands, such as
Saparua,
Haruku,
Nusa Laut and the
Banda Islands
The Banda Islands () are a volcanic group of ten small volcanic islands in the Banda Sea, about south of Seram Island and about east of Java (island), Java, and constitute an administrative district (''kecamatan'') within the Central Maluku ...
.
Geography and geology
Seram is traversed by a central
mountain range
A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have aris ...
, the highest point of which,
Mount Binaiya, is covered with dense
rain forest
Rainforests are forests characterized by a closed and continuous tree Canopy (biology), canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforests can be generally classified as tropi ...
s. Its remarkably complex geology is because of its location at the meeting of several tectonic microplates, which have been described as "one of the most tectonically complex areas on Earth".
Seram falls on its microplate, which has been twisted around by 80° in the last 8 million years
by the relatively faster movement of the Papua microplate. Meanwhile, along with the northward push of the Australian Plate, this has resulted in the uplift that gives north-central Seram peaks of over 3000 m. On the island, there are important karst areas. In the mountains, near Sawai, there is the cave Hatu Saka, currently the deepest cave in Indonesia (-388 m). In Taniwel district, on the north coast, is the underground river
Sapalewa, one of the largest underground rivers on the planet.
The population of the island and the neighbouring smaller islands in the 2020 Census was 773,459 people, administered among three regencies (''kabupaten''), namely
Maluku Tengah Regency (which had 204,907 people on Seram Island itself and 218,185 on the lesser islands, the majority on Ambon Island),
Seram Bagian Barat Regency and
Seram Bagian Timur Regency.
Ecology
Seram Island is remarkable for its high degree of localised bird endemism.
BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding i ...
Saving Asia's threatened birds
, 2003, retrieved 19 May 2010 There are 117 species of
birds
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...
on the island; 14 species and subspecies are
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
, including the
eclectus,
great-billed and
Moluccan king parrot,
purple-naped and
red lories,
salmon-crested cockatoo,
Seram masked owl,
collared,
sacred
Sacred describes something that is dedicated or set apart for the service or worship of a deity; is considered worthy of spiritual respect or devotion; or inspires awe or reverence among believers. The property is often ascribed to objects ( ...
and
lazuli kingfishers,
long-crested myna,
elegant imperial-pigeon,
Seram oriole,
metallic starlings and
grey-necked and
Seram friarbirds.
[,]
The mammals found on Seram include Asian
murid rodents as well as Australasian
marsupial
Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia. They are natively found in Australasia, Wallacea, and the Americas. One of marsupials' unique features is their reproductive strategy: the young are born in a r ...
s, including the
common spotted cuscus and several species of ''
Phalanger''. The mountain area of Seram supports the greatest number of endemic mammals of any island in the region. It harbors 38 mammal species and includes nine species that are endemic or near-endemic, several of which are limited to montane habitats. These include the
Seram bandicoot, several
bat species including
Moluccan and
Seram flying foxes,
Manusela mosaic-tailed rat,
spiny Ceram rat and the
Ceram rat, all considered threatened.
Herpetiles are highly prevalent on the islands. The largest and most dangerous to humans is the
saltwater crocodile, found within the island's coastal
brackish waters and
deltas
A river delta is a landform, wikt:archetype#Noun, archetypically triangular, created by the deposition (geology), deposition of the sediments that are carried by the waters of a river, where the river merges with a body of slow-moving water or ...
; some are known to swim inland via freshwater routes, such as the
Salawai River. Other reptiles of the island include
Amboina sailfin lizards, ''
Bronchocela'' sp., the
brown tree snake,
emerald tree skinks,
green sea turtles,
Indonesian blue-tongued skinks,
Moluccan flying snakes and the
tokay gecko, among numerous other species of
gecko
Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are found in warm climates. They range from .
Geckos are unique among lizards ...
and
skink
Skinks are a type of lizard belonging to the family (biology), family Scincidae, a family in the Taxonomic rank, infraorder Scincomorpha. With more than 1,500 described species across 100 different taxonomic genera, the family Scincidae is one o ...
. Amphibians include ''
Fejervarya'',
fork-tongued frogs and
Horst's and
white-lipped tree frogs.
In the eastern part of the island,
Manusela National Park was established in 1997, covering an area of 1,890 km
2 (11% of the island).
History

Most central Moluccans consider Seram to be their original ancestral home and it is still known colloquially as Nusa Ina (Mother Island).
In the fifteenth and sixteenth centuries, Seram was generally within the sphere of influence of
Ternate
Ternate (), also known as the City of Ternate (; ), is the
List of regencies and cities of Indonesia, city with the largest population in the province of North Maluku and an island in the Maluku Islands, Indonesia. It was the ''de facto'' provi ...
, although it was often ruled more directly by the Ternaten vassal state of
Buru
Buru (formerly spelled Boeroe, Boro, or Bouru) is the third largest island within the Maluku Islands of Indonesia. It lies between the Banda Sea to the south and Seram Sea to the north, west of Ambon Island, Ambon and Seram Island, Seram island ...
. The expedition of
António de Abreu (as captain) and
Francisco Serrão sighted and explored the entire southern coast of Seram in early 1512, for the first time for Europeans.
Portuguese missionaries were active there in the 16th century.
Dutch trading post
A trading post, trading station, or trading house, also known as a factory in European and colonial contexts, is an establishment or settlement where goods and services could be traded.
Typically a trading post allows people from one geogr ...
s were opened in the early 17th century, and the island came under nominal Dutch control c. 1650. The
Tidore Sultanate made periodical claims on Seram and were accorded suzerainty in the eastern part of the island from 1700 to 1768. In the 1780s, Seram provided a key base of support for Prince
Nuku of Tidore's long-running rebellion against Dutch rule. From 1954 until 1962 the island's mountain terrain was the scene of an armed guerilla struggle against Indonesian rule by the counter revolutionary
Republic of South Maluku movement led by
Chris Soumokil.
Administration
Seram includes three of the
regencies within the province of Maluku, but administratively each of these regencies includes a number of smaller islands adjacent to Seram.
#
West Seram Regency (''Kabupaten Seram Bagian Barat'') is mainly located on the island of Seram, but includes various islands lying to the west of Seram –
Manipa,
Kelang,
Boano and the smaller Babi, Pua and Marsegu. It covers a land area of 6,948.40 km
2, and had a population of 164,654 at the 2010 Census
[Biro Pusat Statistik, Jakarta, 2011.] and 212,393 at the 2020 Census;
[Badan Pusat Statistik, Jakarta, 2021.] the estimated total in mid 2023 was 214,979. The principal town lies at
Piru.
#
Central Maluku Regency (''Kabupaten Maluku Tengah''), with its capital at
Masohi, includes the middle part of Seram, as well as much of
Ambon Island
Ambon Island is part of the Maluku Islands of Indonesia. The island has an area of and is mountainous, well watered, and fertile. Ambon Island consists of two territories: the city of Ambon, Maluku, Ambon to the south, and three districts (''k ...
(apart from the City of
Ambon which forms the southern half of that island), the
Lease Islands
The Lease Islands (pronounced LAY-a-SAY, /leɪ.a.seɪ/), formerly called the Uliasers or Uliassers, are a group of three inhabited islands (and smaller uninhabited islets), lying immediately to the south of Seram and east of Ambon Island in the p ...
(
Saparua,
Haruku,
Nusa Laut) and some other smaller offshore islands, plus the
Banda Islands
The Banda Islands () are a volcanic group of ten small volcanic islands in the Banda Sea, about south of Seram Island and about east of Java (island), Java, and constitute an administrative district (''kecamatan'') within the Central Maluku ...
further to the south. It covers 11,595.57 km
2 and had a population of 423,094 at the 2020 Census; this excludes the City of Ambon, which occupies the southern half of
Ambon Island
Ambon Island is part of the Maluku Islands of Indonesia. The island has an area of and is mountainous, well watered, and fertile. Ambon Island consists of two territories: the city of Ambon, Maluku, Ambon to the south, and three districts (''k ...
but is administratively not part of the regency. The portion of the regency on Seram Island itself covers 10,680.55 km
2, and had an estimated 213,694 inhabitants in mid 2023.
[Badan Pusat Statistik, Jakarta, 28 February 2024, ''Kabupaten Maluku Tengah Dalam Angka 2024'' (Katalog-BPS 1102001.8101)]
#
East Seram Regency (''Kabupaten Seram Bagian Timur'') is mainly located on the island of Seram, but also includes smaller islands to the southeast comprising the
Gorom and
Watubela archipelagoes. The regency covers a land area of 5,779.12 km
2, and had a population of 99,065 at the 2010 Census
and 137,972 at the 2020 Census.
The principal town lies at
Bula. Excluding the Gorom and Watubela archipelagoes, the 'mainland' of East Seram covered 5,577 km
2 and had a population of 92,500 in mid 2023.
Religion

Seram has been traditionally associated with the
animism of the indigenous
Alfur (or
Nuaulu), a West Melanesian people who reputedly retained a custom of headhunting until the 1940s. Today, however, most of the population of Seram is either
Muslim
Muslims () are people who adhere to Islam, a Monotheism, monotheistic religion belonging to the Abrahamic religions, Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God ...
or
Christian
A Christian () is a person who follows or adheres to Christianity, a Monotheism, monotheistic Abrahamic religion based on the life and teachings of Jesus in Christianity, Jesus Christ. Christians form the largest religious community in the wo ...
due to both conversion and immigration. Seram was affected by
the violent inter-religious conflict that swept Maluku province starting in late 1998, resulting in tens of thousands of displaced persons across the province but after the Malino II Accord of 2002 tempers cooled. Seram has been peaceful for many years but towns like
Masohi remain informally divided into de facto Christian and Muslim sections.
Around 7,000 people belonging to the
Manusela tribe follow Hinduism.
Economy
Copra,
resin
A resin is a solid or highly viscous liquid that can be converted into a polymer. Resins may be biological or synthetic in origin, but are typically harvested from plants. Resins are mixtures of organic compounds, predominantly terpenes. Commo ...
,
sago
Sago () is a starch extracted from the pith, or spongy core tissue, of various tropical palm stems, especially those of ''Metroxylon sagu''. It is a major staple food for the lowland peoples of New Guinea and the Maluku Islands, where it is c ...
, and
fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...
are important products.
Oil is produced in the northeast near Bula by CITIC Seram Energy
who took over from KUFPEC (Indonesia) Limited in 2006.
The Oseil oil field is located onshore in the northeast of the island in the Seram Non-Bula Production Sharing Contract area.
[ The discovery well was drilled in 1993.][ As of end 2010 the Seram Non-Bula Block had estimated proven oil reserves of 9.7 million barrels.][ Most production comes from the Jurassic Manusela carbonate formation.]
See also
* 1899 Ceram earthquake
* Niwelehu: village in Taniwel
* List of islands of Indonesia
The islands of Indonesia, also known as the Indonesian Archipelago () or Nusantara, may refer either to the islands composing the country of Indonesia or to the geographical groups which include its islands. Indonesia is the world's largest a ...
References
External links
Seacology Seram Island Health Clinic Project
Seacology
Alifuru Consciousness Video
{{Authority control
Islands of the Maluku Islands
Landforms of Maluku (province)
Outer Banda Arc
Wallacea