| Vietnam | 752,197-1,395,096 | 86-1,801 | 1,550-2,131 | 157-297 | 43 | 1,878-3,687 | 0.2-0.49 | 3–5% | Aquaculture conversion, Untreated wastewater | Law on Biodiversity (2008) |
| Philippines | 1,786,000-2,200,000 | 12,576-22,500 | 2,847-3,560 | 4,983-14,445 | 2,093 | 31,910-48,658 | 1.62-3.39 | 16% | Euxinic pollution, Overexploitation, Coral bleaching | E-NIPAS Act (2018), Fisheries Code |
| Malaysia | 328,595-475,600 | 4,000-4,273 | 5,440-6,418 | 16.3-650 | 85-89 | 23,942-25,061 | 4.84-5.3 | 10% | Destructive fishing, Coastal urbanization | Fisheries Act (1985), State Enactments |
| Brunei | 38,600-86,076 | 6-210 | 115-184 | 13+ species | 7 | 15-51.7 | 0.04-0.44 | Not specified | Oil spills, Coastal development, Overfishing | Fisheries Order (2009), Forest Act |
| Cambodia | 48,697-55,600 | 27-125 | 467-627 | 6.6-324.9 | 4 | 524-719 | 1.08-1.48 | 10% | Deforestation, IUU fishing, Unregulated tourism | Environmental Code (2023) |
| China | 963,556-3,000,000 | 531-1,773 | 215-303 | 211-7,694 | 352 | 46,136-93,300 | 4.82 | 30% | Reclamation, Pollution, Fragmented governance | Marine Environmental Protection Law |
| Indonesia | 2,700,000-6,019,205 | 8,386-41,940 | 29,534-36,680 | 1,506-6,601 | 554 | 180,765-309,713 | 3-9.5 | 30% by 2045 | Overexploitation, Invasive species, Climate change | Act No. 5 (1990), Law No. 27 (2007) |
| Japan | 372,246-4,066,513 | 961-1,447 | 8.7-10.3 | 71.2-616.6 | 559 | 560,806-667,455 | 13.3-13.79 | 30% | Population decline (fewer managers), Climate change | Nature Conservation Act, Basic Law on Ocean Policy |
| Myanmar | 497,460-512,000 | 535-2,873 | 5,435 | 32.7-3,288 | 6 | 3,164 | 0.64 | Not specified | Mangrove clearing for aquaculture, Blast fishing, Civil conflict | Conservation of Biodiversity Law (2018) |
| Republic of Korea | 347,671-400,000 | N/A | N/A | 70 | 39 | 3,127-7,887 | 2.27 | Not specified | Urbanization, Invasive species (sea carpet) | Marine Ecosystems Act, Wetland Conservation Act |
| Singapore | 675-744 | 9.3-24.4 | 7.3-9.3 | 2.3-127 | 1 | 0.4 | N/A | Not specified | Land reclamation, Invasive species via shipping | Parks and Trees Act (2005) |
| Thailand | 298,561-323,488 | 153-1,175 | 2,455-2,640 | 189-255 | 47 | 13,416-14,997 | 4.37-5.02 | 15% (2027), 30% (2030) | Urban expansion, Tourism impacts, Sedimentation | National Park Act, Marine Resources Act |
| Timor-Leste | 75,000-77,471 | 46-127 | 6.4-10 | 17.8-509 | 4-7 | 562-566 | 0.73-0.75 | Not specified | Mangrove clearing for fuel/aquaculture, Destructive fishing | UNTAET Reg 2000/19, Decree Law 5/2016 |