South China Sea
Encyclopedia
The South China Sea is a marginal sea
Marginal sea
The term marginal sea has differing meanings. In one sense the term is equivalent to territorial waters. In another sense the term indicates a partially enclosed sea adjacent to or widely open to the open ocean, but bounded by submarine ridges...

 that is part of the Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

, encompassing an area from the Singapore
Singapore Strait
The Singapore Strait is a 105-kilometer long, 16-kilometer wide strait between the Strait of Malacca in the west and the South China Sea in the east. Singapore is on the north of the channel and the Riau Islands are on the south...

 and Malacca Straits to the Strait of Taiwan of around 3500000 square kilometres (1,351,357.6 sq mi). The area's importance largely results from one-third of the world's shipping transiting through its waters, and that it is believed to hold huge oil and gas reserves beneath its seabed.

It is located
  • south of mainland China
    Mainland China
    Mainland China, the Chinese mainland or simply the mainland, is a geopolitical term that refers to the area under the jurisdiction of the People's Republic of China . According to the Taipei-based Mainland Affairs Council, the term excludes the PRC Special Administrative Regions of Hong Kong and...

     and the island of Taiwan
    Taiwan
    Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

    ,
  • west of the Philippines
    Philippines
    The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

    ,
  • north west of Sabah (Malaysia), Sarawak (Malaysia) and Brunei
    Brunei
    Brunei , officially the State of Brunei Darussalam or the Nation of Brunei, the Abode of Peace , is a sovereign state located on the north coast of the island of Borneo, in Southeast Asia...

    ,
  • north of Indonesia
    Indonesia
    Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

    ,
  • north east of the Malay peninsula (Malaysia) and Singapore
    Singapore
    Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

    , and
  • east of Vietnam
    Vietnam
    Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

    .


The minute South China Sea Islands
South China Sea Islands
The South China Sea Islands consist of over 250 around 1-km² islands, atolls, cays, shoals, reefs, and sandbars in the South China Sea, most of which have no indigenous people, many of which are naturally under water at high tide, some of which are permanently submerged...

, collectively an archipelago
Archipelago
An archipelago , sometimes called an island group, is a chain or cluster of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- and πέλαγος – pélagos through the Italian arcipelago...

, number in the hundreds. The sea and its mostly uninhabited islands are subject to competing claims of sovereignty by several countries. These claims are also reflected in the variety of names used for the islands and the sea.

Names

South China Sea is the dominant term used in English
English language
English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

 for the sea, and the name in most European languages is equivalent, but it is sometimes called by different names in neighboring countries, often reflecting historical claims to hegemony over the sea.

The English name is a result of early European interest in the sea as a route from Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and South Asia
South Asia
South Asia, also known as Southern Asia, is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities , also includes the adjoining countries to the west and the east...

 to the trading opportunities of China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. In the sixteenth century Portuguese
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 sailors called it the China Sea (Mar da China); later needs to differentiate it from nearby bodies of water led to calling it the South China Sea. The International Hydrographic Organization
International Hydrographic Organization
The International Hydrographic Organization is the inter-governmental organisation representing the hydrographic community. It enjoys observer status at the UN and is the recognised competent authority on hydrographic surveying and nautical charting...

 refers to the sea as "South China Sea (Nan Hai)".

In Southeast Asia it was once called the Champa Sea Sea of Cham, after the maritime kingdom of Champa
Champa
The kingdom of Champa was an Indianized kingdom that controlled what is now southern and central Vietnam from approximately the 7th century through to 1832.The Cham people are remnants...

 that flourished there before the sixteenth century. The majority of the sea came under Japanese naval control during World War II following the military acquisition of many surrounding South East Asian territories in 1941. Japan calls the sea Minami Shina
Shina (word)
are Romanized Japanese transliterations for the Chinese character compound "支那" which is viewed by most Chinese people as an offensive term for China...

 Kai "South China Sea". This was written 南支那海 until 2004, when the Japanese Foreign Ministry and other departments switched the spelling 南シナ海, which has become the standard usage in Japan.

In China, it is called the "South Sea", 南海 Nánhǎi, and in Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

 the "East Sea", Biển Đông. In the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

, Malaysia, and Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 it was long called the "South China Sea" (Dagat Timog Tsina in Tagalog, Laut China Selatan in Malay
Malay language
Malay is a major language of the Austronesian family. It is the official language of Malaysia , Indonesia , Brunei and Singapore...

), with the part within Philippine territorial waters often called the "Luzon
Luzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

 Sea", Dagat Luzon, by the Philippines. However, following an escalation of the Spratly Islands dispute
Spratly Islands dispute
The Spratly Islands dispute is a territorial dispute over the ownership of the Spratly Islands, a group of islands located in the South China Sea. States staking claims to various islands are: the People's Republic of China, the Republic of China , Malaysia, the Philippines, Vietnam, and Brunei...

 in 2011, various Philippine government agencies started using the neologism "West Philippine Sea". A Pagasa
Philippine Atmospheric, Geophysical and Astronomical Services Administration
The Philippine Atmospheric, Geophysical and Astronomical Services Administration is a Philippine national institution dedicated to provide flood and typhoon warnings, public weather forecasts and advisories, meteorological, astronomical, climatological, and other specialized information and...

 spokesperson said that the sea to the east of the Philippines will continue to be called the Philippine Sea
Philippine Sea
The Philippine Sea is a marginal sea east and north of the Philippines occupying an estimated surface area of 2 million mi² on the western part of the North Pacific Ocean...

.

Geography

States and territories with borders on the sea (clockwise from north) include: the People's Republic of China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

 (including Macau
Macau
Macau , also spelled Macao , is, along with Hong Kong, one of the two special administrative regions of the People's Republic of China...

 and Hong Kong
Hong Kong
Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

), the Republic of China
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

 (Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

), the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

, Malaysia, Brunei
Brunei
Brunei , officially the State of Brunei Darussalam or the Nation of Brunei, the Abode of Peace , is a sovereign state located on the north coast of the island of Borneo, in Southeast Asia...

, Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

, Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

, and Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

.

Major rivers that flow into the South China Sea include the Pearl
Pearl River (China)
The Pearl River or less commonly, the "Guangdong River" or "Canton River" etc., , is an extensive river system in southern China. The name Pearl River is usually used as a catchment term to refer to the watersheds of the Xi Jiang , the Bei Jiang , and the Dong Jiang...

, Min, Jiulong
Jiulong River
The Jiulong River or Jiulong Jiang is the largest river in southern Fujian, and the second largest in the province. Like all Fujian rivers but one, it flows into the Taiwan Strait....

, Red
Red River (Vietnam)
The Red River , also known as the Sông Cái - Mother River , or Yuan River , is a river that flows from southwest China through northern Vietnam to the Gulf of Tonkin...

, Mekong
Mekong
The Mekong is a river that runs through China, Burma, Laos, Thailand, Cambodia and Vietnam. It is the world's 10th-longest river and the 7th-longest in Asia. Its estimated length is , and it drains an area of , discharging of water annually....

, Rajang
Rajang River
The Rajang River is a river in Sarawak, Malaysia. The river is located in northwest of Borneo and it originates in the Iran Mountains. The river flows approximately 563 km to the South China Sea, making it the longest river in Malaysia....

, Pahang
Pahang River
Pahang River or is a river in the state of Pahang, Malaysia on the Malay Peninsula. With 459 km in length, it is the longest river on the Malay Peninsula...

, Pampanga
Pampanga River
Pampanga River is the second largest river in the island of Luzon, next to Cagayan River and the third largest river in the Philippines...

, and Pasig
Pasig River
The Pasig River is a river in the Philippines that connects Laguna de Bay to Manila Bay. Stretching for , it is lined by Metro Manila on each side...

 Rivers.

Extent

The International Hydrographic Organization
International Hydrographic Organization
The International Hydrographic Organization is the inter-governmental organisation representing the hydrographic community. It enjoys observer status at the UN and is the recognised competent authority on hydrographic surveying and nautical charting...

 defines the limits of the South China Sea as follows:

On the South. The Eastern and Southern limits of Singapore
Singapore Strait
The Singapore Strait is a 105-kilometer long, 16-kilometer wide strait between the Strait of Malacca in the west and the South China Sea in the east. Singapore is on the north of the channel and the Riau Islands are on the south...

 and Malacca Straits [A line joining Tanjong Datok, the Southeast point of Johor
Johor
Johor is a Malaysian state, located in the southern portion of Peninsular Malaysia. It is one of the most developed states in Malaysia. The state capital city and royal city of Johor is Johor Bahru, formerly known as Tanjung Puteri...

e (1°22′N 104°17′E) through Horsburgh Reef to Pulo Koko, the Northeastern extreme of Bintan Island (1°13.5′N 104°35′E). The Northeastern coast of Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

] as far West as Tanjong Kedabu (1°06′N 102°58′E) down the East coast of Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

 to Lucipara Point (3°14′S 106°05′E) thence to Tanjong Nanka, the Southwest extremity of Banka Island
Bangka Island
Bangka is an island lying east of Sumatra, Indonesia. Population 626,955. Area: c.4,600 sq mi .There is an additional small island named Pulau Bangka in northern Sulawesi, Indonesia.-Geography:...

, through this island to Tanjong Berikat the Eastern point (2°34′S 106°51′E), on to Tanjong Djemang (2°36′S 107°37′E) in Billiton
Belitung
Belitung, , is an island on the east coast of Sumatra, Indonesia in the Java Sea. The island is known for its pepper and for its tin. It was in the possession of the British from 1812 until the British ceded control of the island to the Dutch in the Anglo-Dutch Treaty of 1824...

, along the North coast of this island to Tanjong Boeroeng Mandi (2°46′S 108°16′E) and thence a line to Tanjong Sambar (3°00′S 110°19′E) the Southwest extreme of Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

.

On the East. From Tanjong Sambar through the West coast of Borneo to Tanjong Sampanmangio, the North point, thence a line to West points of Balabac

Balabac Island
Balabac Island is the southern-most island of the Palawan province in the Philippines, only about north from Sabah, Malaysia, across the Balabac Strait.Administratively, the island forms the main part of Balabac Municipality and is divided into 14 barangays:...

 and Secam Reefs, on to the West point of Bancalan Island and to Cape Buliluyan, the Southwest point of Palawan
Palawan
Palawan is an island province of the Philippines located in the MIMAROPA region or Region 4. Its capital is Puerto Princesa City, and it is the largest province in the country in terms of total area of jurisdiction. The islands of Palawan stretch from Mindoro in the northeast to Borneo in the...

, through this island to Cabuli Point, the Northern point thereof, thence to the Northwest point of Busuanga
Busuanga Island
Busuanga Island is the largest island in the Calamian Group in the province of Palawan in the Philippines. Busuanga Island is, in fact, the second largest island in the province after Palawan island itself. The island is located halfway between the islands of Mindoro and Palawan with the South...

 and to Cape Calavite in the island of Mindoro
Mindoro
Mindoro is the seventh-largest island in the Philippines. It is located off the coast of Luzon, and northeast of Palawan. The southern coast of Mindoro forms the northeastern extremum of the Sulu Sea.-History:...

, to the Northwest point of Lubang Island
Lubang Island
Lubang Island is the largest island in the Lubang Group of Islands, an archipelago which lies to the northwest of the northern end of Mindoro in the Philippines. The Lubang Islands are about southwest of Manila. There are seven islands in the group, The island is divided into two municipalities. ...

 and to Point Fuego (14°08'N) in Luzon Island
Luzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

, through this island to Cape Engano, the Northeast point of Luzon, along a line joining this cape with the East point of Balintang Island (20°N) and to the East point of Y'Ami Island (21°05'N) thence to Garan Bi, the Southern point of Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

 (Formosa), through this island to Santyo (25°N) its North Eastern Point.

On the North. From Fuki Kaku the North point of Formosa to Kiushan Tao (Turnabout Island)

Kiushan Tao
Kiushan Tao is an island east of China. It is also known as Niushan Dao , Niu Shan, and Turnabout Island. The island forms a part of the boundary between the East China Sea and the South China Sea.-External links:...

 on to the South point of Haitan Tao
Pingtan Island
Pingtan Island is located in eastern coastal area in Fujian province, China. It is the largest island in Fujian, and the fifth largest island in China...

 (25°25'N) and thence Westward on the parallel of 25°24' North to the coast of Fukien
Fujian
' , formerly romanised as Fukien or Huguing or Foukien, is a province on the southeast coast of mainland China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, and Guangdong to the south. Taiwan lies to the east, across the Taiwan Strait...

.

On the West. The Mainland, the Southern limit of the Gulf of Thailand

Gulf of Thailand
The Gulf of Thailand , also known in to Malays as Teluk Siam literally meant Gulf of Siam, is a shallow arm of the South China Sea.-Geography:...

 and the East coast of the Malay Peninsula
Malay Peninsula
The Malay Peninsula or Thai-Malay Peninsula is a peninsula in Southeast Asia. The land mass runs approximately north-south and, at its terminus, is the southern-most point of the Asian mainland...

.

Geology

The sea lies above a drowned continental shelf
Continental shelf
The continental shelf is the extended perimeter of each continent and associated coastal plain. Much of the shelf was exposed during glacial periods, but is now submerged under relatively shallow seas and gulfs, and was similarly submerged during other interglacial periods. The continental margin,...

; during recent ice ages global sea level was hundreds of metres lower, and Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

 was part of the Asian mainland.

The South China Sea opened after around 45 million years ago
Eocene
The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...

 when the Dangerous Grounds (Reed Tablemount) were rifted away from southern China. Extension culminated in seafloor spreading
Seafloor spreading
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics....

 around 30 million years ago, a process that propagated to the SW resulting in the V-shaped basin we see today. Extension ceased around 17 million years ago. Arguments have continued about the role of tectonic extrusion in forming the basin. Paul Tapponnier
Paul Tapponnier
Paul Tapponnier was born on January 6, 1947 in Annecy, France. He became an engineer from the prestigious Ecole Nationale Superieure des Mines de Paris in 1970. He started his career at the Universite du Languedoc, in Montpellier, and trained as a research fellow at the Massachusetts Institute of...

 and colleagues have argued that as India collides with Asia it pushes Indochina
Indochina
The Indochinese peninsula, is a region in Southeast Asia. It lies roughly southwest of China, and east of India. The name has its origins in the French, Indochine, as a combination of the names of "China" and "India", and was adopted when French colonizers in Vietnam began expanding their territory...

 to the SE. The relative shear between Indochina and China caused the South China Sea to open. This view is disputed by geologists who do not consider Indochina to have moved far relative to mainland Asia. Recent marine geophysical studies by Peter Clift
Peter Clift
Peter Clift is a British marine geologist and geophysicist specializing in the geology of Asia and the western Pacific. He is currently Kilgour Professor of Geology at the University of Aberdeen, where he has been since 2004.-Scientific Research:...

 has shown that the Red River Fault was active and causing basin formation at least by 37 million years ago in the NW South China Sea, consistent with extrusion playing a part in the formation of the sea. Since opening the South China Sea has been the repository of large sediment volumes delivered by the Mekong River, Red River
Red River (Vietnam)
The Red River , also known as the Sông Cái - Mother River , or Yuan River , is a river that flows from southwest China through northern Vietnam to the Gulf of Tonkin...

 and Pearl River
Pearl River (China)
The Pearl River or less commonly, the "Guangdong River" or "Canton River" etc., , is an extensive river system in southern China. The name Pearl River is usually used as a catchment term to refer to the watersheds of the Xi Jiang , the Bei Jiang , and the Dong Jiang...

. Several of these deltas are rich in oil and gas deposits.

Islands and seamounts

The South China Sea contains over 250 small island
Island
An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

s, atoll
Atoll
An atoll is a coral island that encircles a lagoon partially or completely.- Usage :The word atoll comes from the Dhivehi word atholhu OED...

s, cays, shoals, reef
Reef
In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water ....

s, and sandbars, most of which have no indigenous people, many of which are naturally under water at high tide, and some of which are permanently submerged. The features are grouped into three archipelagos (listed by area size), Macclesfield Bank and Scarborough Shoal:
  • The Spratly Islands
    Spratly Islands
    The Spratly Islands are a group of more than 750 reefs, islets, atolls, cays and islands in the South China Sea. The archipelago lies off the coasts of the Philippines and Malaysia , about one third of the way from there to southern Vietnam. They comprise less than four square kilometers of land...

  • The Paracel Islands
    Paracel Islands
    The Paracel Islands, also called Xisha Islands in Chinese and Hoàng Sa Islands in Vietnamese, is a group of islands under the administration of Hainan Province, The People's Republic of China. Vietnam and the Republic of China also claim sovereignty of these islands...

  • The Pratas Islands
    Pratas Islands
    The Pratas Islands or Dongsha Islands consists of three islands forming from an atoll located in northeastern South China Sea, southeast of Hong Kong. The islands are governed by the Republic of China . The People's Republic of China claims sovereignty over these islands along with all other...

  • The Macclesfield Bank
    Macclesfield Bank
    Macclesfield Bank or Zhongsha Islands is an elongated sunken atoll of underwater reefs and shoals in the South China Sea and part of the disputed South China Sea Islands, centred around , east of the Paracel Islands. Its length exceeds southwest-northeast, with a maximal width of more than...

  • The Scarborough Shoal
    Scarborough Shoal
    Scarborough Shoal or Scarborough Reef , more correctly described as a group of islands and reefs in an atoll shape than a shoal, is located between the Macclesfield Bank and Luzon, Philippines in the South China Sea. As with most of the landforms in this sea, the sovereignty of the area is disputed...



The Spratly Islands spread over an 810 by 900 km area covering some 175 identified insular features, the largest being Taiping Island (Itu Aba) at just over 1.3 km long and with its highest elevation at 3.8 metres.

The largest singular feature in the area of the Spratly Islands is a 100 km wide seamount
Seamount
A seamount is a mountain rising from the ocean seafloor that does not reach to the water's surface , and thus is not an island. These are typically formed from extinct volcanoes, that rise abruptly and are usually found rising from a seafloor of depth. They are defined by oceanographers as...

 called Reed Tablemount, also known as Reed Bank, in the northeast of the group, separated from Palawan
Palawan
Palawan is an island province of the Philippines located in the MIMAROPA region or Region 4. Its capital is Puerto Princesa City, and it is the largest province in the country in terms of total area of jurisdiction. The islands of Palawan stretch from Mindoro in the northeast to Borneo in the...

 Island of the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 by the Palawan Trench. Now completely submerged, with a depth of 20 m, it was an island until it sank about 7,000 years ago due to the increasing sea level after the last ice age
Ice age
An ice age or, more precisely, glacial age, is a generic geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers...

. With an area of 8,866 km², it is one of the largest submerged atoll
Atoll
An atoll is a coral island that encircles a lagoon partially or completely.- Usage :The word atoll comes from the Dhivehi word atholhu OED...

 structures of the world.

Resources

It is an extremely significant body of water in a geopolitical sense. It is the second most used sea lane
Sea lane
A sea lane or shipping lane is a regularly used route for ocean-going and Great Lakes vessels. In the time of sailing ships they were not only determined by the distribution of land masses but also the prevailing winds, whose discovery was crucial for the success of long voyages...

 in the world, while in terms of world annual merchant fleet tonnage, over 50% passes through the Strait of Malacca
Strait of Malacca
The Strait of Malacca is a narrow, stretch of water between the Malay Peninsula and the Indonesian island of Sumatra. It is named after the Malacca Sultanate that ruled over the archipelago between 1414 to 1511.-Extent:...

, the Sunda Strait
Sunda Strait
The Sunda Strait is the strait between the Indonesian islands of Java and Sumatra. It connects the Java Sea to the Indian Ocean...

, and the Lombok Strait
Lombok Strait
The Lombok Strait is a strait connecting the Java Sea to the Indian Ocean, located between the islands of Bali and Lombok in Indonesia. The Gili Islands are on the Lombok side....

. Over 1.6 million m³ (10 million barrels) of crude oil a day are shipped through the Strait of Malacca
Malacca
Malacca , dubbed The Historic State or Negeri Bersejarah among locals) is the third smallest Malaysian state, after Perlis and Penang. It is located in the southern region of the Malay Peninsula, on the Straits of Malacca. It borders Negeri Sembilan to the north and the state of Johor to the south...

, where there are regular reports of piracy
Piracy
Piracy is an act of robbery or criminal violence at sea. The term can include acts committed on land, in the air, or in other major bodies of water or on a shore. It does not normally include crimes committed against persons traveling on the same vessel as the perpetrator...

, but much less frequently than before the mid-20th century.

The region has proven oil
Petroleum
Petroleum or crude oil is a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling...

 reserves of around 1.2 km³ (7.7 billion barrels
Barrel (unit)
A barrel is one of several units of volume, with dry barrels, fluid barrels , oil barrel, etc...

), with an estimate of 4.5 km³ (28 billion barrels) in total. Natural gas
Natural gas
Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons . It is found associated with other hydrocarbon fuel, in coal beds, as methane clathrates, and is an important fuel source and a major feedstock for fertilizers.Most natural...

 reserves are estimated to total around 7,500 km³ (266 trillion cubic feet).

According to studies made by the Department of Environment and Natural Resources, Philippines, this body of water holds one third of the entire world's marine biodiversity, thereby making it a very important area for the ecosystem.

Territorial claims

Several countries have made competing territorial claims over the South China Sea. Such disputes have been regarded as Asia's most potentially dangerous point of conflict.
Both People's Republic of China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

 (PRC) and the Republic of China
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

 (ROC) claim almost the entire body as their own, demarcating their claims within what is known as the nine-dotted line
Nine-dotted line
The nine-dotted line, U-shape line, or nine-dash map refers to the demarcation line used by the government of the People's Republic of China for its claim in the South China Sea, an area including the Paracel Islands and Spratly Islands disputed by the Philippines, China, Brunei, Malaysia, Taiwan...

, which claims overlap with virtually every other country in the region. Competing claims include:
  • Indonesia, China, and Taiwan over waters NE of the Natuna Islands
    Natuna Islands
    The Natuna Islands archipelago is located in the Natuna Sea in the larger Tudjuh Archipelago, off the northwest coast of Borneo. The islands are administratively part of the Riau Islands province of Indonesia and are the northernmost non-disputed island group of Indonesia...

  • The Philippines, China, and Taiwan over the Malampaya and Camago gas fields.
  • The Philippines, China, and Taiwan over Scarborough Shoal
    Scarborough Shoal
    Scarborough Shoal or Scarborough Reef , more correctly described as a group of islands and reefs in an atoll shape than a shoal, is located between the Macclesfield Bank and Luzon, Philippines in the South China Sea. As with most of the landforms in this sea, the sovereignty of the area is disputed...

    .
  • Vietnam, China, and Taiwan over waters west of the Spratly Islands
    Spratly Islands
    The Spratly Islands are a group of more than 750 reefs, islets, atolls, cays and islands in the South China Sea. The archipelago lies off the coasts of the Philippines and Malaysia , about one third of the way from there to southern Vietnam. They comprise less than four square kilometers of land...

    . Some or all of the islands themselves are also disputed between Vietnam, China, Taiwan, Brunei, Malaysia, and the Philippines.
  • The Paracel Islands
    Paracel Islands
    The Paracel Islands, also called Xisha Islands in Chinese and Hoàng Sa Islands in Vietnamese, is a group of islands under the administration of Hainan Province, The People's Republic of China. Vietnam and the Republic of China also claim sovereignty of these islands...

     are disputed between the PRC/ROC and Vietnam.
  • Malaysia, Cambodia, Thailand and Vietnam over areas in the Gulf of Thailand
    Gulf of Thailand
    The Gulf of Thailand , also known in to Malays as Teluk Siam literally meant Gulf of Siam, is a shallow arm of the South China Sea.-Geography:...

    .
  • Singapore and Malaysia along the Strait of Johore and the Strait of Singapore.


China and Vietnam have both been vigorous in prosecuting their claims. The People's Republic of China and South Vietnam each controlled part of the Paracel Islands before 1974. A brief conflict in 1974 resulted in 18 soldiers being killed, and China has controlled the whole of Paracel since then. The Spratly Islands
Spratly Islands
The Spratly Islands are a group of more than 750 reefs, islets, atolls, cays and islands in the South China Sea. The archipelago lies off the coasts of the Philippines and Malaysia , about one third of the way from there to southern Vietnam. They comprise less than four square kilometers of land...

 have been the site of a naval clash, in which over seventy Vietnamese sailors were killed just south of Chigua Reef in March 1988. Disputing claimants regularly report clashes between naval vessels.

ASEAN in general, and Malaysia in particular, has been keen to ensure that the territorial disputes within the South China Sea do not escalate into armed conflict. As such, Joint Development Authorities have been set up in areas of overlapping claims to jointly develop the area and dividing the profits equally without settling the issue of sovereignty over the area. This is true, particularly in the Gulf of Thailand. Generally, China has preferred to resolve competing claims bi-laterally, while ASEAN countries prefer multi-lateral talks, believing that they are disadvantaged in bi-lateral negotiations with the much larger China and that because many countries claim the same territory only multilateral talks could effectively resolve the competing claims.

The overlapping claims over Pedra Branca or Pulau Batu Putih including neighboring Middle Rocks by both Singapore and Malaysia were settled in 2008 by the International Court of Justice
International Court of Justice
The International Court of Justice is the primary judicial organ of the United Nations. It is based in the Peace Palace in The Hague, Netherlands...

, awarding Pedra Branca/Pulau Batu Puteh to Singapore and Middle Rocks to Malaysia.

In July 2010, US Secretary of State Hillary Clinton called for the Peoples Republic of China to resolve the territorial dispute. China responded by demanding the US keep out of the issue. This came at a time when both countries have been engaging in naval exercises in a show of force to the opposing side, which increased tensions in the region. The US Department of Defense released a statement on August 18 where it opposed the use of force to resolve the dispute, and accused China of assertive behaviour.

Chinese objection to Indian naval presence and oil exploration

On July 22, 2011, one of India's amphibious assault vessels, the INS Airavat which was on a friendly visit to Vietnam, was reportedly contacted at a distance of 45 nautical miles from the Vietnamese coast in the disputed South China Sea, was contacted on open radio channel identifying itself as the Chinese Navy and stating that the ship was entering Chinese waters. The spokesperson for the Indian Navy clarified that as no ship or aircraft was visible from INS Airavat it proceeded on her onward journey as scheduled. The Indian Navy further clarified that "[t]here was no confrontation involving the INS Airavat. India supports freedom of navigation in international waters, including in the South China Sea, and the right of passage in accordance with accepted principles of international law. These principles should be respected by all."

In September 2011, shortly after China and Vietnam had signed an agreement seeking to contain a dispute over the South China Sea, India's state-run explorer, Oil and Natural Gas Corporation (ONGC) said that its overseas investment arm ONGC Videsh Limited had signed a three-year deal with PetroVietnam
Petrovietnam
PetroVietnam is the trading name of Vietnam Oil and Gas Group . PetroVietnam has developed rapidly since it was established in 1977, and its activities, through its various companies and wholly owned subsidiaries, now cover all the operations from oil and gas exploration and production to...

 for developing long-term cooperation in the oil sector and that it had accepted Vietnam's offer of exploration in certain specified blocks in the South China Sea. In response, Chinese Foreign Ministry spokesperson Jiang Yu, without referring to India by name, stated as follows: “China enjoys indisputable sovereignty over the South China Sea and the island. China's stand is based on historical facts and international law. China's sovereign rights and positions are formed in the course of history and this position has been held by Chinese Government for long. On the basis of this China is ready to engage in peaceful negotiations and friendly consultations to peacefully solve the disputes over territorial sovereignty and maritime rights so as to positively contribute to peace and tranquillity in the South China Sea area. We hope that the relevant countries respect China's position and refrain from taking unilateral action to complicate and expand the issue. We hope they will respect and support countries in the region to solve the bilateral disputes through bilateral channels. As for oil and gas exploration activities, our consistent position is that we are opposed to any country engaging in oil and gas exploration and development activities in waters under China's jurisdiction. We hope the foreign countries do not get involved in South China Sea dispute.” The spokesman of the Ministry of External Affairs of the Government of India responded by saying that “The Chinese had concerns but we are going by what the Vietnamese authorities have told us and have conveyed this to the Chinese.” The Indo-Vietnamese deal was also denounced by the Chinese state-run newspaper Global Times.

South China Sea in astronomy

South China Sea is associated with the star Xi Serpentis
Xi Serpentis
Xi Serpentis is a triple star system in the constellation Serpens. The primary star, Xi Serpentis A, is a yellow-white F-type giant with an apparent magnitude of +3.54. It is a spectroscopic binary with an orbital period of 2.29 days. A 13th magnitude companion, Xi Serpentis B, is located 25...

in asterism Left Wall, Heavenly Market enclosure
Heavenly Market enclosure
Tian Shi Yuan, the Heavenly Market Enclosure , is one of the San Yuan or Three enclosures. Stars and constellations of this group are visible during late summer and early autumn in the Northern Hemisphere . The summer triangle lies directly to the northwest.-Asterisms:The asterisms are :...

 (see Chinese constellation
Chinese constellation
Chinese constellations are the way the ancient Chinese grouped the stars. They are very different from the modern IAU recognized constellations. This is because the IAU was based on Greco-Roman astronomy instead of Chinese astronomy....

).

See also

  • East China Sea
    East China Sea
    The East China Sea is a marginal sea east of China. It is a part of the Pacific Ocean and covers an area of 1,249,000 km² or 750,000 square miles.-Geography:...

  • South China Sea shipwrecks
    South China Sea shipwrecks
    The South China Sea shipwrecks are two shipwrecks discovered in the South China Sea. The shipwrecks may yield important archaeological evidence about the marine Silk Road trade route linking ancient China with the Western world....

  • Territorial disputes in South China Sea

Further reading


External links

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