| Location and brief description of areas | C1 | C2 | C3 | C4 | C5 | C6 | C7 |
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| For key to criteria, see page 4 |
1. Hainan Dongzhaigang Mangrove National Natural Reserve- Location: The area is located in the northeast of the Meilan district, Haikou City (110°30'–110°37' E, 19°51'–20°01' N). It covers 5400 ha.
- The area covers an important coastal mangrove ecosystem and has most of the typical original natural mangroves in China. The area also has very rich biodiversity, especially various marine and coastal species, for example, mangrove forests, waterfowl, phytoplankton and zooplankton. This estuary and coastal mudflat ecosystem is on the edge of boreal tropics, and is also an important habitat for wintering birds.
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2. Shankou Mangrove National Nature Reserve- Location: The area is located on either side of the Shatian Peninsula, southeast of Hepu County, Guangxi Zhuang Autonomous Region of China. It is centred at 21°28'N, 109°43'E. It covers a total area of 8,000 hectares and stretches along the coast for some 50 km.
- There are 14 species of mangrove and large populations of benthic diatoms, fish, shellfish, birds and insects in this area, and it has become one of the most typical coastal mangrove areas in China.
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3. Nanji Islands Marine Reserve- Location: The area has a total coverage of 201.06 km2, including land area of 11.13 km2. It is located at121°05′E and 27°27′N.
- The area contains a high level of biodiversity, including 427 species of shellfish and 178 species of macro-benthic algae. It is known as “a kingdom of shells and algae”. There are also 459 species of micro-algae, 397 species of fish, 257 species of crustaceans and 158 species of other marine creatures. Among these, nine species are listed as endangered or vulnerable species by IUCN.
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4. Cold Seeps- Location: The area is located in the southwest Taiwan Basin at 21°12’N, 118°30’E; 21°12’N, 120°17’E; 22°19’, 118°30’E; and 22°19’, 120°17’E, and at a depth of 2900m-3000m. The area covers approximately 14,000 km2.
- The deep-sea ecosystems of this area are unique not only for their communities of diverse bacteria, mussels, clams, hairy crabs and shrimps, but also for their habitats formed mainly by calcite, aragonite, dolomite, pyrite and authigenic minerals, including siderite, barite, gypsum, and natural sulphur, which support a high biomass of bacteria, mussels, clams, hairy crabs and shrimps.
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5. Muan Tidal Flat- Location: The area is located in the south-western coastal area of the Korean peninsula, from 35° 04′20″N to 35° 07′52″N and from 126° 21′2″E to 126° 27′9″E. It covers about 42 km2.
- The area maintains its pristine condition with well-developed substrate for supporting numerous migratory waterbird species and fisheries resources. The sediments characteristically contain 30-40% clay content. The area has high value for conservation as there are many globally endangered and protected species that hatch, nurse and feed in the area. This is a particularly rich feeding area for waterbirds. Some 29,000 winter waterbirds belonging to 48 species have been observed. In addition, 47 species of halophyte are distributed in Muan tidal flat. The diversity of benthic animals is also very high. The tidal flat has been a protected area since 2001 and was designated as a Ramsar site in 2008.
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6. Intertidal Areas of East Asian Shallow Seas- Location: This area encompasses 20 individual sites that form the basis of a Flyway-wide network within the East Asian seas. The sites are located in Japan, Republic of Korea, China, Vietnam, Thailand, Malaysia, Indonesia, Philippines and Myanmar.
- The intertidal zones of shallow coastal seas in East Asia are critically important for the survival of many migratory waterbird species that are dependent on these areas for different stages of their life cycle, mostly obviously during the migration periods, when some sites form critical bottlenecks, particularly in the Yellow Sea ecoregion (China, Republic of Korea, Democratic People’s Republic of Korea), as well as for breeding and non-breeding populations. Different species have different migratory strategies that depend on a network of sites throughout the Flyway, to be able to complete their migration. Intertidal mudflats and sandflats have been disappearing at an alarming rate in recent decades (60 per cent for the Yellow Sea in 50 years) leaving migratory waterbirds dependent on an ever-decreasing number of sites. As a consequence the populations of migratory waterbirds have declined precipitously, with up to 30 species endangered or critically endangered, and depending on a handful of sites, often unprotected, for their survival. All remaining intertidal areas of the East Asian Seas are of vital importance to saving migratory waterbirds dependent on them.
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8. Redang Island Archipelago and Adjacent Area- Location: Redang Island is located about 45 km or 24.28 nautical miles to the northeast of Kuala Terengganu. Redang Island has a surface area of about 2,483.58 ha — the largest of nine islands within the Redang Island archipelago. The archipelago area is approximately within the coordinates of 5o 43’ 28.92N, 102o 59’ 04.53”E and 5o 49’ 10.49”N, 103o 03’ 02.82E.
- The coral reefs in Pulau Redang are among the best on the East coast of Malaysia and are generally in good condition. A study by Reef Check Malaysia in 2014 shows that the reefs around Redang islands are considered to be in “Good” condition, with live coral cover of 58.13 per cent, which is slightly above the average (56.38 per cent) for reefs within the Sunda Shelf region. The diversity of fish and invertebrates is average. Based on recent marine biological studies, Redang Island is believed to be the seed-source for most of the marine biodiversity of the eastern part of Peninsular Malaysia. The beaches in Terengganu offer nesting sites for the hawksbill turtle (Eretmochelys imbricata), the leatherback turtle (Dermochelys coriacea) and the endangered green turtle (Chelonia mydas). There are 36 turtle nesting sites on the beaches of Terengganu, out of a total of 78 nesting sites in Malaysia. Turtle landings occur at virtually every beach in Terengganu, but nesting is concentrated at Pulau Redang; Pulau Perhentian; Penarik; Rantau Abang; Paka; Geliga and Kijal.
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9. Southern Straits of Malacca- Location: This area covers the waters and beaches from the Negeri Sembilan to the Riau Archipelago, Indonesia. The area encompasses the existing marine protected area, turtle-nesting and inter-nesting area, and turtle-feeding ground. The northern boundary of the area is 101.6ºE 2.42ºN, and the southern boundary is 104.98ºE 0.57ºN.
- The area is unique because it is a shallow, narrow water mass sandwiched between Sumatera Island and Peninsular Malaysia, and linked with the Straits of Singapore and Riau Archipelago. It is an important foraging and inter-nesting habitat for one of the few viable populations of hawksbill turtles. The beaches of Negeri Sembilan and Melaka are home to the highest nesting population of hawksbill turtle and in the adjacent area, Sungai Linggi provides a crucial habitat for endangered painted terappins and river terappins. It harbours diverse marine resources within its seagrass bed, estuaries and mangroves.
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10. Nino Konis Santana National Park- Location: The area is located at 8°27′00″S and 127°20′00″E and covers 1,236 km2.
- This area is rich in marine biodiversity, including sharks, coral trout (Plectropomus species), and the highly threatened Napoleon wrasse (Cheilinus undulatus) as well as other types of marine species that are densely concentrated around coral reefs in the area. The area also has a high level of productivity due to strong ocean mixing, which raises both nutrient concentrations in the area and supports the high level of biodiversity.
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11. The Upper Gulf of Thailand- Location: The area is centered at N13o 2' 39.994", E100o 27' 50.783. The area covers 9,565 km2, along 400 km of the coastline. The area covers the coastal area of Chon Buri, Chacheangsao, Samut Prakarn, Bangkok, Samut Sakhon, Samut Songkram and Phetchaburi provinces of Thailand.
- The area is characterized by a range of habitats and a high level of biodiversity. The area contains mangrove forests, macrobenthic fauna, phytoplankton and zooplankton, as well as fish, birds (mangrove birds and migratory birds) and endangered marine species, such as hawksbill turtles (Eretmochelys imbricate), green turtles (Chelonia mydas), Irrawaddy dolphins (Orcaella brevirostris), finless porpoises (Neophocaena phocaenoides), Indo-Pacific humpback dolphins (Sousa chinensis), Indo-Pacific bottlenose dolphin (Tursiops aduncus) and Bryde’s whales (Balaenoptera edeni). The coastal water of this area serves as feeding ground, mating ground and nursing ground for Bryde’s whales.
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12. Halong Bay-Catba Limestone Island Cluster- Location: The marine waters of Halong bay-Catba Limestone Island Cluster are situated in the nearshore area of the North-east Tonkin Gulf near Haiphong city, Vietnam. It includes Baitulong Bay National Park, Halong Bay World Natural Hetitage, Catba National Park, Catba Biosphere Reserve and Marine Park, as well as Longchau islands. Its total area is about 15.783 ha, with 9.658 ha in marine area.
- The marine waters of Halong Bay-Catba Limestone Island Cluster is a highly unique set of 2400 limestone islands and islets that are associated with special island fringing reefs. It contains a remarkable diversity of coastal and marine habitats and ecosystems, including coral reefs, seagrass beds, mangroves, sandy and coral beaches, hard and soft bottom and substrata, tidal marshes, karst saline lakes, embayments, coastal bays, karst caves, underwater karst valleys, karst funnels, karst wells, channel stones and shallow-water areas. It also has a high diversity of species, including phytoplankton, zooplankton, mollusca, crustacean, marine fish, reptiles, snakes, sea turtles and mammals.
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13. Tioman Marine Park- Location: The Tioman Marine Park archipelago consists of nine islands, which are the largest of the 42 marine park islands of Peninsular Malaysia. It is located at 1040 11’ E and 020 47’N. The archipelago is 19km in length and 11km wide, and covers 25,115 hectares of sea area.
- The coral reefs in Tioman Marine Park are some of the best on the east coast of Malaysia. A study conducted in 2014 showed that this area’s coral was in good condition, with 60 per cent live coral cover, 26 per cent in excellent condition and 37 per cent in good condition. A total of 326 species of coral reef fish from 55 families were observed from coral reefs in Tioman Marine Park. Tioman island subtidal seagrass meadows provide good refuge for dugong traveling between islands on the east coast of Peninsular Malaysia. Some rare and important species have been observed, such as the Black Stripe Coris (Coris pictoides), two rare and undescribed gobies (Gobiidae) Amblyeleotris sp. and the rare perch parapercis sp. in addition seventeen species that are categorized to be rare worldwide were found in Tioman. With its high biological diversity, Tioman is believed to be the seed-source for most of the marine biodiversity of the eastern part of Malaysia.
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14. Koh Rong Marine National Park- Location: The area is located at at 10°35'7.49"N, 103°17'55.36"E. It encompasses approximately 78 km2 around the Koh Rong Archipelago, which lies 25 km off the coastal town of Sihanoukville, Cambodia.
- The area is located around a large island in the Gulf of Thailand off the Cambodian mainland. The island has about 43 km of coastline with 23 beaches of varying length and composition. The area contains coral reefs and seagrass habitats, and supports regionally significant populations of several marine mammals, including the dugong, the false killer whale (Pseudorca crassidens), a long-beaked form of common dolphin (Delphinus capensis tropicalis), pantropical spotted dolphin (Stenella attenuata), dwarf spinner dolphin (S. Longirostris roseiventris), Indo-Pacific bottlenose dolphin (Tursiops aduncus), and Indo-Pacific humpback dolphin. It also supports three globally threatened species of sea turtles, namely the green turtle (Chelonia mydas), the hawksbill (Eretmochelys imbricata) and the leatherback (Dermochelys coriacea).
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15. Lampi Marine National Park- Location: The area is located in Boke Pyin Township of Tanintharyi Division in Myanmar.
- This area is one of the 43 protected areas of Myanmar and its only national marine park. It is located in the Myeik Archipelago, which comprises more than 800 islands distributed along 600km of coastline in the Andaman Sea. The area contains a number of ecologically important habitats, including mangrove forests, coral reefs and seagrasses, which serve as critical habitats for molluscs, crustaceans, echinoderms and fishes, as well as threatened species such as the green turtle and the dugong that feed on seagrass and a variety of birds that feed in the intertidal zone and sublittoral zone.
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16. Raja Ampat and Northern Bird’s Head77Indonesia plans to undertake a national exercise to update the scientific and technical information for the description of this area.- Location: The area is located in the northwestern part of Papua in eastern Indonesia. Situated near the Equator in Southeast Asia, this area is at the heart of the Coral Triangle and encompasses myriad small islands and coral reefs. Raja Ampat consists of four main islands and hundreds of other small islands, located at the western side of the Bird’s Head Seascape. The boundary of the globally outstanding area of Raja Ampat and Northern Bird’s Head covers two adjacent areas within the Bismarck Solomon Seas Ecoregion.
- The Bird’s Head Seascape is one of the world’s most important biodiversity hotspots, covering a high diversity of geographical features, habitats and marine species. Situated in the heart of the Coral Triangle, it is the global epicenter of tropical shallow-water marine biodiversity, with over 600 coral species and 1,638 reef fish species. The area is known for particularly significant diverse reef habitat and species richness, providing foraging ground for tuna as well as breeding habitats for leatherback turtles. The local eddies and turbulence in Raja Ampat, generated by strong current flow, lead to good larval connectivity among the reefs, which contributes to high coral reef resilience. The importance for life history stages of various threatened species like turtles and cetaceans as well as high endemism, together with the above features, makes this a globally important area.
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17. Atauro Island- Location: The area is located about 27 km north of the city of Dili, Timor-Leste, and measures about 144 km2 in area.
- This area is a home of marine megafauna in the ocean strait between Atauro and Timor-Leste. Atauro Island is a small island surrounded by a pristine marine area. A study shows that Atauro Island hosts high biodiversity, with a new species called Humann’s Fairy-wrasse (Cirrhilabrus humanni) found around Atauro Island towards Alor Island, Indonesia. Atauro marine area is also considered a hotspot for dugong populations living and migrating within Indian and the Pacific Ocean.
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18. Sulu-Sulawesi Marine Ecoregion- Location: The Sulu-Sulawesi Marine Ecoregion (SSME) is located between 15° N / 116° E and 0° N / 127° just above the equator. It covers 1,003,526 km2.
- The area is situated at the apex of the Coral Triangle region in the Indo-West Pacific, at the global centre of marine biodiversity. It is an area of maximum coral and tropical reef fish diversity, based on numerous scientific studies. The SSME is home to coral reefs, seagrass meadows and mangrove forests, which in turn support fishes, sea turtles, dolphins, whales, sharks, rays, and other less-known but equally important marine flora and fauna.
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19. Benham Rise- Location: The area is bounded to the North and East by the West Philippine Basin, and to the West and South by the island of Luzon. It is enclosed by the coordinates 123° 30' E to 126° 00' E longitude and 17° 42' N to 15° 36' N latitude.
- The area is a relatively pristine 13-million-hectare undersea plateau off the eastern coast of Luzon Island. It is of critical ecological importance, including for offshore mesophotic coral reef biodiversity and for the sustainability of fisheries. Aside from being an important source of biodiversity and contributing to the resiliency of threatened ecosystems, it also forms part of the only known spawning area of the Pacific bluefin tuna, Thunnusorientalis. In addition, recent studies suggest that the interaction of the western boundary currents with the Benham Rise can lead to enhanced biological productivity.
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20. Eastern Hokkaido- Location: The area is located between 42.9°N and 45.4°N latitude, and between 144.3°E and 145.8°E longitude. The area covers rocky shores around Shiretoko Peninsula; coastal and lagoonal areas along Nemuro Straits; rocky habitats around Nemuro Peninsula, Habomai Islands and Shikotan Island; and rocky shores and estuaries along the eastern Pacific coast.
- The area covers the most pristine natural ecosystems of Japan. The marine ecosystem here is strongly influenced by the cold Oyashio currents and winter ice cover, making this area home to marine species specially adapted to a cold climate. The area contains various types of ecosystems, including brackish estuaries and a lagoon, intertidal flats, rocky intertidal shores, seagrass beds and kelp forests.
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21. Southwest Islands- Location: The area is located between 23.9°N and 28.7°N latitude, and between 122.8°E and 130.2°E longitude. It comprises Amami Island, Okinawa Island, Kerama Islands, Miyako Islands and Yaeyama Islands.
- The southwest islands of Japan, including Amami Islands, Okinawa Islands, Miyako Islands and Yaeyama Islands, belong to the subtropical region, characterized by the occurrence of fringing, barrier and atoll reefs. In most areas, mangrove and seagrass beds occur within the reef, and the continuous seascape by these habitats hosts a wide variety of associated flora and fauna, including many endemic species.
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22. Inland Sea Areas of Western Kyushu- Location: The area is located between 31.9°N and 33.2°N latitude, and between 129.9°E and 130.7°E longitude. It covers the Ariake Sea, Amakusa and Yatsushiro Sea (Nagasaki, Saga, Kumamoto and Kagoshima Prefectures).
- This area is unique due to their large tidal amplitude. Extensive mud flats appear at inner parts of the waters in Ariake Sea and Yatsushiro Sea. In these intertidal flats, many benthic organisms belonging to diverse taxa occur, as do many endemic species. The outer coastal areas of this area hosts a variety of intertidal and subtidal habitats, including rocky shores, seaweed and seagrass beds, and temperate coral communities.
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23. Southern Coastal Areas of Shikoku and Honshu Islands- Location: The area is located between 32.7°N and 35.4°N latitude, and between 132.2°E and 139.9°E longitude. It covers southwestern Shikoku Island (Kochi and Ehime Prefectures), Southern Kii Peninsula (Wakayama Prefecture), Shima Peninsula (Mie Prefectures), Izu Peninsula (Shizuoka Prefecture), Boso Peninsula (Chiba Prefecture) and Izu Shichito Islands.
- This area is heavily influenced by the Kuroshio current, which characterizes the benthic flora and fauna of these regions. Open coastal areas are mostly rocky shore, whereas semi-enclosed bays behind the exposed capes are suitable habitats for soft-bottom benthic organisms, including seagrass beds. Temperate coral communities are also observed in most of these areas.
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24. South Kyushu including Yakushima and Tanegashima Islands- Location: The area is located between 30.1°N and 31.8°N latitude, and between 130.3°E and 131.2°E longitude. It covers Tanegashima Island, Yakushima Island, Kinko Bay and surrounding coastal areas (Kagoshima Prefecture).
- The area is located at the southernmost part of the temperate zone. The southern limits of many temperate marine species are found around this region. The area comprises a variety of habitats, including rocky intertidal shores and subtidal seaweed beds at exposed coasts, seagrass beds at the inner part of the bay, and temperate coral reefs in Tanegashima and Yakushima Islands.
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25. Ogasawara Islands- Location: The area is located between 27.8°N and 26.5°N latitude, and between 142.0°E and 142.3°E longitude.
- The Ogasawara Islands host a variety of endemic species. In 2011, the whole area was declared a UNESCO World Heritage Site. Located in the subtropical climate region, the coastal sea areas have well-developed coral reefs specific to oceanic islands, and the islands are also known as important breeding grounds for seabird colonies.
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26 Northern Coast of Hyogo, Kyoto, Fukui, Ishikawa and Toyama Prefectures- Location: The area is located between 35.4°N and 37.6°N latitude, and between 134.5°E and 137.4°E longitude. It covers adjacent waters of Takeno coast and Maruyama River mouth, Wakasa-wan Bay, Echizen and Kaga coasts, outer coast of Noto Peninsula, and Nanao Bay and southern Toyama Bay.
- The northern coast of the middle of Honshu Island is largely affected by the warm Tsugaru Current. The tidal range is very small compared to other parts of the Pacific coast, inhibiting the development of intertidal flats and rocky shores. However, the area is diverse in topography, including sand flats, exposed rocky coast, complex rias coast, semi-closed inner bay, and most notably, a deep bottom in Toyama Bay, which causes local upwelling and highly productive zones around the coast.
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27. Ryukyu Trench- Location: This area is located south of Ryukyu Islands, with a location between 26.6°N, 130.1°E and 22.7°N, 122.9°E.
- It corresponds to the intersection of the Philippine plate and Eurasian plate. The Ryukyu Trench contains important chemosynthetic ecosystems in the slope at depths of 5,802-5,808m, 1,400–1,500 m and 636–812 m, which are home to six endemic species. Studies have suggested that the fauna of this trench are distinct from the fauna of other trenches.
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28. West Kuril Trench, Japan Trench, Izu-Ogasawara Trench and North of Mariana Trench- Location: This area is located between 42.1°N, 146.8°E and 23.2°N, 141.1°E.
- Ocean trenches (area exceeding water depths of 6000 m) are unique habitats. Trench habitats are especially well developed in the western Pacific region, from the Kuril to the Mariana trenches. The uniqueness of the biota inhabiting in this region has been recognized in many scientific articles. In some areas, chemosynthetic ecosystems are developing, and species living in such ecosystems have been known to be associated with only one or two seepages. Thus the species in the trench are endemic, very rare, vulnerable and prone to extinction. Fortunately, the naturalness of this trench environment is well–preserved, thus far, because it is extremely remote.
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29. Nankai Trough- Location: This area is located south of Honshu Island, Japan, between 35.1°N, 138.8°E and 29.5°N, 130.4°E.
- The area is located along the convergent boundary between the Philippine Sea and Eurasian plates. This area is associated with great earthquakes along the subduction zone. Many chemosynthetic communities have been recognized in a wide depth range from 270 to 4,800 m due to the existence of numerous methane seeps. Although species richness is not as high as the productive areas, the occurrences of endemic species are high in this region: more than 50% of the total number of species in this region is endemic. The seepage fields harbour higher diversity of the endobenthic invertebrates such as the vesicomyid clams.
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30. Sagami Trough and Island and Seamount Chain of Izu-Ogasawara- Location: This area is located in the western Pacific, South of Honshu Island, Japan, between 35.8°N, 141.6°E and 26.5°N, 138.6°E.
- This area includes the Tokyo Submarine Canyon and the submarine canyons that drop steeply from Sagami and Suruga bays as well as the Sagami Trough, spanning 330 km between Sagami Bay, the Boso Peninsula, and Ohshima, and extend to the south to Myojin-sho, the Suiyo Seamount, the Mokuyo Seamount and the Kaikata Seamount. These seamounts are often tectonically active, and many chemosynthetic vent communities area developing in this area.
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31. Convection Zone East of Honshu- Location: The area is located in the east of the northern part of Honshu Island, Japan, between 41.2°N, 145.3°E and 35.9°N, 140.8°E.
- This is the area where the Oyashio Current (cold current) and the Kuroshio Current (warm current) mix. Such a complex front structure forms eddies of both warm and cold water. In addition, Tsugaru Current (warm current) flows in off the Sanriku coast, resulting in a very complex oceanographic features. Primary production is high in this area, and zooplankton, especially krill, is also rich. Consequently, pelagic fishes and mammals are present in very high in densities, as the area provides key feeding areas for these higher trophic-level animals. This area is also important as a feeding area of seabirds.
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32. Bluefin Tuna Spawning Area- Location: This area is located in the upper reaches of the Kuroshio warm current, which flows off southern Japan, extending between 30.1 °N, 130.7 °E and 23.0°N, 122.5°E.
- The waters of the Kuroshio Current’s subtropical zone from the Nansei (Okinawa) Islands, where the Kuroshio Current flows north to the waters off the coast of southern Kyushu, are connected to the Coral Triangle and provide a major spawning area for bluefin tuna.
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33. Kyushu Palau Ridge- Location: The area starts from southeast off Cape Toi located in the southeast side of Kyushu Island, with southern extension near to Palau. It separates Shikoku and west Mariana Basins and Philippine Basin. It is located between 31.1°N - 17.0°N and 137.1°E - 132.4°E.
- Kyushu-Palau Ridge is an ocean floor feature. It comprises a chain of many extinct volcanos mostly below sea level. 213 fish species were found in this area, 14 of which were new to science. A unique deep-sea butterfly fish has also been discovered from this area. This area was found to be the spawning ground of the white spotted conger eel.
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34. Kuroshio Current South of Honshu- Location: This area is located from the south and southeastern coast of Kyushu Island, south of Shikoku Island and south of Honshu Island, Japan, between 35.9°N, 141.8°E and 30.0°N, 129.9°E.
- The Kuroshio warm current runs in parallel to coasts of Kyushu Island, Shikoku Island and Honshu Island. This area consists of the waters of the Kuroshio Current’s subtropical zone from the waters off the southern coast of Kyushu Island where the current turns into follow currents off the Boso Peninsula, and the waters on the inside (landward side) of these. Once the Kuroshio Current goes eastward, it will weaken and merge with the convex area off east Honshu (please refer to area No. 35 below). This area is high in biodiversity because the oceanographic setting is complex. It hosts a particularly important spawning ground for commercially important fish and squid species. This area is also used as a reproductive area of finless porpoise. Three endangered fish species have been reported from this area.
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35. Northeastern Honshu- Location: The area covers intertidal and subtidal bottoms of Mutsu Bay coast, coast of Ogawahara lagoons, and Sanriku rias coast of Japan. It is located at between 38.2°N and 41.6°N, and between 140.6°E and 142.2°E.
- The area is known as a highly productive marine area. The area is influenced by three different types of currents, such as cold Oyashio, warm Kuroshio and Tsugaru currents. Diverse marine biota in this area includes both cold-temperature and warm-temperature adapted species. The area covers various types of coastal habitats including tidal flats, lagoons and rocky intertidal shore in intertidal zone, and seagrass beds and seaweed beds (dominated by kelps and sargassums) in subtidal waters.
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36. Hydrothermal Vent Community on the Slope of the South West Islands- Location: Western slope of the South West Islands, which is on the western side of the Okinawa Trough.
- Many chemosynthetic ecosystem sites harbouring both hydrothermal vent and seepage communities have been found in this area. The number of macro- and megafaunal species in the area is the highest among the several deep-sea chemosynthetic regions. The occurrence of endemic species is also high in this region: 68% of the species are endemic to this area. This area still possesses its natural landscape and environment due to its inaccessibility.
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