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Sea Turtles in the East Asia Region

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Sea Turtles in the East Asia Region Sea Turtles in the East Asia Region MTSG Annual Regional Report 2020 Green turtles foraging in the coastal waters of Luichiu Island, Taiwan © Connie Ka Yan NG Editors: Connie Ka Yan NG1,3 and Yoshimasa MATSUZAWA2,3 1Department of Chemistry and State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China 2Sea Turtle Association of Japan, Japan 3Regional Co-Vice Chairs for the East Asia Region, MTSG INDEX REGIONAL OVERVIEW ........................................................................................................ 8 1. RMU: Green Turtle Chelonia mydas, Pacific Northwest (CM-PNW) .............................. 8 1.1. Distribution, abundance, trends ...................................................................................... 8 1.1.1. Nesting sites............................................................................................................. 8 1.1.2. Marine areas ............................................................................................................ 9 1.2. Other biological data ...................................................................................................... 9 1.3. Threats ............................................................................................................................ 9 1.3.1. Nesting sites............................................................................................................. 9 1.3.2. Marine areas ............................................................................................................ 9 1.4. Conservation ................................................................................................................. 10 2. RMU: Loggerhead Turtle Caretta caretta, Pacific North (CC-PN) ................................ 10 2.1. Distribution, abundance, trends .................................................................................... 10 2.1.1. Nesting sites........................................................................................................... 10 2.1.2. Marine areas .......................................................................................................... 10 2.2. Other biological data .................................................................................................... 11 2.3. Threats .......................................................................................................................... 11 2.3.1. Nesting sites........................................................................................................... 11 2.3.2. Marine areas .......................................................................................................... 11 2.4. Conservation ............................................................................................................. 11 3. RMU: Hawksbill Turtle Eretmochelys imbricata, Pacific West (EI-PW) ....................... 12 3.1. Distribution, abundance, trends .................................................................................... 12 3.1.1. Nesting sites........................................................................................................... 12 3.1.2. Marine areas .......................................................................................................... 12 3.2. Other biological data .................................................................................................... 12 3.3. Threats .......................................................................................................................... 13 3.3.1. Nesting sites........................................................................................................... 13 3.3.2. Marine areas .......................................................................................................... 13 3.4. Conservation ................................................................................................................. 13 4. RMU: Olive Ridley Turtle Lepidochelys olivacea, Pacific West (LO-PW) .................... 13 4.1. Distribution, abundance, trends .................................................................................... 13 4.1.1. Nesting sites........................................................................................................... 14 4.1.2. Marine areas .......................................................................................................... 14 4.2. Other biological data .................................................................................................... 14 4.3. Threats .......................................................................................................................... 14 4.3.1. Nesting sites........................................................................................................... 14 4.3.2. Marine areas .......................................................................................................... 14 4.4. Conservation ................................................................................................................. 14 5. RMU: Leatherback Turtle Dermochelys coriacea, Pacific West (DC-PW) .................... 15 5.1. Distribution, abundance, trends .................................................................................... 15 5.1.1. Nesting sites........................................................................................................... 15 5.1.2. Marine areas .......................................................................................................... 15 5.2. Other biological data .................................................................................................... 15 5.3. Threats .......................................................................................................................... 15 5.3.1. Nesting sites........................................................................................................... 15 5.3.2. Marine areas .......................................................................................................... 15 5.4. Conservation ................................................................................................................. 16 JAPAN..................................................................................................................................... 16 1. RMU: Green Turtle Chelonia mydas, Pacific Northwest (CM-PNW) ........................... 16 1.1. Distribution, abundance, trends .................................................................................... 16 1.1.1. Nesting sites........................................................................................................... 16 1.1.2. Marine areas .......................................................................................................... 19 1.2. Other biological data .................................................................................................... 20 1.3. Threats .......................................................................................................................... 20 1.3.1. Nesting sites........................................................................................................... 20 1.3.2. Marine areas .......................................................................................................... 21 1.4. Conservation ................................................................................................................. 21 1.5. Research ....................................................................................................................... 22 1.6. References .................................................................................................................... 22 2. RMU: Loggerhead Turtle Caretta caretta, Pacific North (CC-PN) ................................ 23 2.1. Distribution, abundance, trends .................................................................................... 23 2.1.1. Nesting sites........................................................................................................... 23 2.1.2. Marine areas .......................................................................................................... 25 2.2. Other biological data .................................................................................................... 28 2.3. Threats .......................................................................................................................... 29 2.3.1. Nesting sites........................................................................................................... 29 2.3.2. Marine areas .......................................................................................................... 29 2.4. Conservation ................................................................................................................. 29 2.5. Research ....................................................................................................................... 30 2.6. References .................................................................................................................... 30 3. RMU: Hawksbill Turtle Eretmochelys imbricata, Pacific West (EI-PW) ...................... 31 3.1. Distribution, abundance, trends .................................................................................... 31 3.1.1. Nesting sites..........................................................................................................
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