Spratly Islands

Geographic and economic overview

In 1939, the Spratly Islands were coral islets mostly inhabited by seabirds. Despite the Spratly Islands naturally consisting of 19 islands (see below), according to a Chinese 1986 source, the Spratly Islands consist of 14 islands or islets, 6 banks, 113 submerged reefs, 35 underwater banks and 21 underwater shoals.

The islands are all of similar nature; they are cays (or keys): sand islands formed on old degraded and submerged coral reefs. The northeast part of the Spratly Islands is known as Dangerous Ground and is characterised by many low islands, sunken reefs, and degraded, sunken atolls with coral often rising abruptly from ocean depths greater than 1,000 m (3,000 ft) — all of which makes the area dangerous for navigation.

The Spratly Islands contain almost no arable land, are largely uninhabited, and very few of the islands have a permanent drinkable water supply.

Natural resources include fish, guano, oil and natural gas. Economic activity has included commercial fishing, shipping, guano mining, oil and gas exploitation, and more recently, tourism. The Spratly Islands are located near several primary shipping lanes.

The islands and cays, listed in descending order of naturally occurring area, are:

The total area of the archipelago's naturally occurring islands is 177 ha (440 acres) and 200 ha (490 acres) with reclaimed land.

Confusingly, the Spratly Islands at times were also referred to as the Paracels.

Geology

The Spratly Islands consist of islands, reefs, banks and shoals made up of biogenic carbonate. These accumulations of biogenic carbonate lie upon the higher crests of major submarine ridges that are uplifted fault blocks known by geologists as horsts. These horsts are part of a series of half-grabens and rotated fault-blocks which lie parallel and en echelon. The long axes of the horsts, rotated fault blocks and half-grabens form well-defined linear trends that lie parallel to magnetic anomalies exhibited by the oceanic crust of the adjacent South China Sea. The horsts, rotated fault blocks, and the rock forming the bottoms of associated grabens consist of stretched and subsided continental crust that is composed of Triassic, Jurassic, and Cretaceous strata that include calc-alkalic extrusive igneous rocks, intermediate to acid intrusive igneous rocks, sandstones, siltstones, dark-green claystones, and metamorphic rocks that include biotite–muscovite–feldspar–quartz migmatites and garnet–mica schists.

The dismemberment and subsidence of continental crust into horsts, rotated fault blocks and half-grabens that underlie the Spratly Islands and surrounding sea bottom occurred in two distinct periods. They occurred as the result of the tectonic stretching of continental crust along underlying deeply rooted detachment faults. During the Late Cretaceous and Early Oligocene, the earliest period of tectonic stretching of continental crust and formation of horsts, half-grabens, and rotated fault-blocks occurred in association with the rifting and later sea-floor spreading that created the South China Sea. During the Late Oligocene-Early Miocene additional stretching and block faulting of continental crust occurred within the Spratly Islands and adjacent Dangerous Ground. During and after this period of tectonic activity, corals and other marine life colonised the crests of the horsts and other ridges that lay in shallow water. The remains of these organisms accumulated over time as biogenic carbonates that comprise the current day reefs, shoals and cays of the Spratly Islands. Starting with their formation in Late Cretaceous, fine-grained organic-rich marine sediments accumulated within the numerous submarine half-grabens that underlie sea bottom within the Dangerous Ground region.

The geological surveys show localised areas within the Spratly Islands region are favourable for the accumulation of economic oil and gas reserves. They include thick sequences of Cenozoic sediments east of the Spratly Islands. Southeast and west of them, there also exist thick accumulations of sediments that possibly might contain economic oil and gas reserves, which lie closer to the Spratly Islands.

Ecology

In some cays in the Spratly Islands, the sand and pebble sediments form the beaches and spits around the island. Under the influence of the dominant wind direction, which changes seasonally, these sediments move around the island to change the shape and size of the island. For example, Spratly Island is larger during the northeast monsoon (about 700 by 300 metres (2,300 ft × 980 ft)), and smaller during the southwest monsoon (approximately 650 m × 320 m (2,130 ft × 1,050 ft)).

Some islands may contain fresh groundwater fed by rain. Groundwater levels fluctuate during the day with the rhythm of the tides.

Phosphates guano (bird faeces) are mainly concentrated in the beach rocks by the way of exchange-endosmosis. The principal minerals bearing phosphate are podolite, lewistonite and dehonite.

Coral reefs

Coral reefs are the predominant structures of these islands; the Spratly group contains over 600 coral reefs in total. In April 2015 The New York Times reported that China were using "scores of dredgers" to convert Fiery Cross Reef and several other reefs into military facilities.

Vegetation

Little vegetation grows on these islands, which are subject to intense monsoons. Larger islands are capable of supporting tropical forest, scrub forest, coastal scrub and grasses. It is difficult to determine which species have been introduced or cultivated by humans. Taiping Island (Itu Aba) was reportedly covered with shrubs, coconut, and mangroves in 1938; pineapple was also cultivated there when it was profitable. Other accounts mention papaya, banana, palm, and even white peach trees growing on one island. A few islands that have been developed as small tourist resorts had soil and trees brought in and planted where there was none.

Wildlife

A total of 2,927 marine species have been recorded in the Spratly Sea, including 776 benthic species, 382 species of hard coral, 524 species of marine fish, 262 species of algae and sea grass, 35 species of seabirds, and 20 species of marine mammals and sea turtles. Terrestrial vegetation in the islands includes 103 species of vascular plants of magnolia branches (Magnoliophyta) of 39 families and 79 genera. The islands that do have vegetation provide important habitats for many seabirds and sea turtles. Both the green turtle (Chelonia mydas, endangered) and the hawksbill turtle (Eretmochelys imbricata, critically endangered) formerly occurred in numbers sufficient to support commercial exploitation. These species reportedly continue to nest even on islands inhabited by military personnel (such as Pratas Island) to some extent, though it is believed that their numbers have declined.

Seabirds use the islands as resting, breeding, and wintering sites. Species found here include streaked shearwater (Calonectris leucomelas), brown booby (Sula leucogaster), red-footed booby (S. sula), great crested tern (Sterna bergii), and white tern (Gygis alba). Little information is available regarding the current status of the islands' seabird populations, though it is likely that birds may divert nesting sites to smaller, less disturbed islands. Bird eggs cover the majority of Southwest Cay, a small island in the eastern Danger Zone. A variety of cetaceans such as dolphins, orcas, pilot whales, and sperm whales are also present around the islands.

This ecoregion is still largely a mystery. Scientists have focused their research on the marine environment, while the ecology of the terrestrial environment remains relatively unknown.

Ecological hazards

Political instability, tourism, and the increasing industrialisation of neighbouring countries has led to serious disruption of native flora and fauna, over-exploitation of natural resources, and environmental pollution. Disruption of nesting areas by human activity and/or by introduced animals, such as dogs, has reduced the number of turtles nesting on the islands. Sea turtles are also slaughtered for food on a significant scale. The sea turtle is a symbol of longevity in Chinese culture and at times the military personnel are given orders to protect the turtles.

Heavy commercial fishing in the region incurs other problems. Although it has been outlawed, fishing methods continue to include the use of bottom trawlers fitted with chain rollers. In 1994, a routine patrol by Taiwan's marine navy confiscated more than 200 kg (400 lb) of potassium cyanide solution from fishermen who had been using it for cyanide fishing. These activities have a devastating impact on local marine organisms and coral reefs.

Some interest has been taken in regard to conservation of these island ecosystems. J.W. McManus, professor of marine biology and ecology at the University of Miami's Rosenstiel School of Marine, Atmospheric, and Earth Science School, has explored the possibilities of designating portions of the Spratly Islands as a marine park. One region of the Spratly Archipelago, named Truong Sa, was proposed by Vietnam's Ministry of Science, Technology, and the Environment (MOSTE) as a future protected area. The site, with an area of 160 km2 (62 sq mi), is currently managed by the Khánh Hòa Provincial People's Committee of Vietnam.

Military groups in the Spratly Islands have engaged in environmentally damaging activities such as shooting turtles and seabirds, raiding nests and fishing with explosives. The collection of rare medicinal plants, collecting of wood, and hunting for the wildlife trade are common threats to the biodiversity of the entire region, including these islands. Coral habitats are threatened by pollution, over-exploitation of fish and invertebrates, and the use of explosives and poisons as fishing techniques.

A 2014 United Nations Environment Programme (UNEP) report stated, "Sand is rarer than one thinks".

The average price of sand imported by Singapore was US$3 per tonne from 1995 to 2001, but the price increased to US$190 per tonne from 2003 to 2005. Although the Philippines and China had both ratified the UNCLOS III, in the case of and Johnson South Reef, Hughes Reef, Mischief Reef, the PRC dredged sand for free in the EEZ the Philippines had claimed from 1978 arguing this is the "waters of China's Nansha Islands".

History

The earliest evidence of human presence in the nearby region, dating back nearly 50,000 years, has been found in the Tabon Caves on Palawan in the Philippine islands. By 2,000 BC, the maritime jade road, an advanced and extensive sea-based trade network, was established by the animist indigenous Austronesian peoples of the Philippines and Taiwan. The trade network later expanded to include states in what is now Brunei, Malaysia, Singapore, Thailand, Indonesia, Cambodia, and Vietnam. Between 600 BC to 3 BC there was an east to west migration by members of the seafaring Sa Huỳnh culture, who, like the earlier Austronesians who came before them, may have passed through the Spratly Islands on their way to Vietnam. These migrants were the forebears of the Cham people, an Austronesian-speaking people that founded the Old Champa kingdom in mainland Southeast Asia.

Early records and cartography

In the Song Dynasty work Zhu fan zhi by Zhao Rugua, the name "Thousand Li Stretch of Sands" (Qianli Changsha, 千里長沙) and the "Ten-Thousand Li of Stone Pools/Beds" (Wanli Shitang 萬里石塘, or Wanli Shichuang 萬里石床) were given, interpreted by some to refer to Paracel and Spratly respectively. Wanli Shitang is also recorded in the History of Yuan to have been explored by the Chinese during the Mongol-led Yuan dynasty and may have been considered by them to have been within their national boundaries. However, the Yuan also ruled over Korea, Outer Mongolia, and parts of modern Russia. They are also referenced, sometimes with different names, in the Ming dynasty. For example, in the Mao Kun map dating from Zheng He's voyage of the early 15th century, Shixing Shitang (石星石塘) is taken by some to mean Spratly, however different authors interpret the identities of these islands differently. Another Ming text, Haiyu (海語, On the Sea), uses Wanli Changsha (萬里長沙) for Spratly and noted that it is located southeast of Wanli Shitang (Paracels). When the Ming Dynasty collapsed, the Qing dynasty continued to include the territory in maps compiled in 1724, 1755, 1767, 1810, and 1817, but did not officially claim jurisdiction over these islands.

An early European map, A correct chart of the China Seas of 1758 by William Herbert, left the Spratly Islands region (known then as the Dangerous Ground) as largely blank, indicating that region has yet to be properly surveyed, although some islands and shoals at its western edge were marked (one appears at the same place as Thitu Island). A number of maps of the South China Sea were later produced, but the first map that gives a reasonably accurate delineation of the Spratly Islands region (titled [South] China Sea, Sheet 1) was only published in 1821 by the hydrographer of the East India Company James Horsburgh after a survey by Captain Daniel Ross. A later 1859 edition of the map named the Spratly Island as Storm Island. The islands were sporadically visited throughout the 19th and early 20th centuries by mariners from different European powers (including Richard Spratly, after whom the island group derives its most recognisable English name, who visited the group in the 1840s in his whaler Cyrus). However, these nations showed little interest in the islands. In 1883, German boats surveyed the Spratly and the Paracel Islands but eventually withdrew the survey, after receiving protests from the Guangdong government representing the Qing dynasty. China sent naval forces on inspection tours in 1902 and 1907 and placed flags and markers on the islands.

A Vietnamese map from 1834 also combines the Spratly and Paracel Islands into one region known as "Vạn Lý Trường Sa", a feature commonly incorporated into maps of the era (萬里長沙) ‒ that is, the same as the aforementioned Chinese island name Wanli Changsha. According to Hanoi, Vietnamese maps record Bãi Cát Vàng (Golden Sandbanks, referring to both the Spratly and Paracel Islands), which lay near the coast of the central Vietnam, as early as 1838. In Phủ Biên Tạp Lục (The Frontier Chronicles) by scholar Lê Quý Đôn, both Hoàng Sa and Trường Sa were defined as belonging to the Quảng Ngãi District. He described it as where sea products and shipwrecked cargoes were available to be collected. Vietnamese text written in the 17th century referenced government-sponsored economic activities during the Lê dynasty, 200 years earlier. The Vietnamese government conducted several geographical surveys of the islands in the 18th century. Despite the fact that China and Vietnam both made a claim to these territories simultaneously, at the time, neither side was aware that its neighbour had already charted and made claims to the same stretch of islands.

Military conflicts and diplomatic dialogues

The following are political divisions for the Spratly Islands claimed by various area nations (in alphabetical order):

Brunei: Part of Brunei's Exclusive Economic Zone

China: Part of Sansha, Hainan

Malaysia: Part of Sabah state

Philippines: Part of Kalayaan, Palawan province

Taiwan: Part of Kaohsiung municipality

Vietnam: Part of Trường Sa, Khánh Hòa Province

In the 19th century, Europeans found that Chinese fishermen from Hainan annually sojourned on the Spratly islands for part of the year, while in 1877 it was the British who launched the first modern legal claims to the Spratly Islands.

Some Chinese scholars and officials argue that the 1887 Sino-French Tonkin Boundary convention signed after the Sino-French War recognised the sovereignty of China over the Paracel and Spratly islands. The line mentioned in the convention can be more accurately described as a shorthand for dividing islands between China and Vietnam in the Gulf of Tonkin, but not its maritime waters. In the 1950s amid warming ties between the two countries, Mao Zedong decided to hand over Bạch Long Vĩ Island, which lies to the west of the dividing line and had Chinese inhabitants, to Vietnam. In 1933 and 1937 France sent diplomatic notes to China maintaining that the 1887 treaty determined the ownership of islands near the Móng Cái area only not anywhere beyond that.

The Chinese Ministry of Foreign Affairs also try to claim that a 1883 incident involving a German ship conducting surveys in the South China Sea without China's consent was protested with Berlin and the Germans terminated the survey. Western scholars have determined, however, that this incident is not based on verifiable references and is inconsistent with other Chinese inaction during the same time period given that, in 1885, the German Admiralty published a two‐sheet chart entitled Die Paracel‐Inseln (The Paracel Islands). The chart documented the work of a German expedition to the Paracels between 1881 and 1884.

2016 arbitration

In January 2013, the Philippines initiated arbitration proceedings against China under the United Nations Convention on the Law of the Sea (UNCLOS) across a range of issues, including the latter's historic rights claims over parts or all of the Spratly Islands inside the nine-dash line. A tribunal of arbitrators constituted under Annex VII of UNCLOS appointed the Permanent Court of Arbitration (PCA) as registry to the proceedings.

On 12 July 2016, the arbitral tribunal ruled in favor of the Philippines on most of its submissions. While it would not "rule on any question of sovereignty over land territory and would not delimit any maritime boundary between the Parties", it concluded that China had not historically exercised exclusive control within the nine-dash line, hence has "no legal basis" to claim "historic rights" to resources. It also concluded that China's historic rights claims over the maritime areas (as opposed to land masses and territorial waters) inside the nine-dash line would have no lawful effect outside of what is entitled to under UNCLOS. It criticized China's land reclamation projects and construction of artificial islands in the Spratly Islands, saying that they had caused "severe harm to the coral reef environment". Finally, it characterized Taiping Island and other features of the Spratly Islands as "rocks" under UNCLOS, and therefore are not entitled to a 200 nautical mile exclusive economic zone. The award was ruled as final and non-appealable by either country. China rejected the ruling, calling it "ill-founded". Taiwan, which currently administers Taiping Island, the largest of the Spratly Islands, also rejected the ruling. As of November 2023, 26 governments support the ruling, 17 issued generally positive statements noting the ruling but not called for compliance, and eight rejected it. The governments in support were Australia, Austria, Belgium, Canada, the Czech Republic, Denmark, Finland, France, Germany, Greece, India, Ireland, Italy, Japan, the Netherlands, New Zealand, the Philippines, Poland, Portugal, Romania, Slovakia, South Korea, Spain, Sweden, the United Kingdom, and the US; the eight in opposition were China, Montenegro, Pakistan, Russia, Sudan, Syria, Taiwan, and Vanuatu. The United Nations itself does not have a position on the legal and procedural merits of the case or on the disputed claims, and the Secretary-General expressed his hope that the continued consultations on a Code of Conduct between ASEAN and China under the framework of the Declaration of the Conduct of Parties in the South China Sea will lead to increased mutual understanding among all the parties.

Transportation and communication

Telecommunications

In 2005, a cellular phone base station was erected by the Philippines' Smart Communications on Pag-asa Island.

Vietnam Military Telecommunications Corp., known commonly as Viettel, established mobile coverage in the Spratly Islands in 2007.

On 18 May 2011, China Mobile announced that its mobile phone coverage has expanded to the Spratly Islands. The extended coverage would allow soldiers stationed on the islands, fishermen, and merchant vessels within the area to use mobile services, and can also provide assistance during storms and sea rescues. The service network deployment over the islands took nearly one year.

In 2013, Taiwan's Chunghwa Telecom established a satellite-based cellular base station on Taiping Island.