| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Andaman Sea | Sea/Bay/Gulf | native | 5736 |
| Arabian Sea | Sea/Bay/Gulf | native | 2872 |
| Bay of Bengal | Sea/Bay/Gulf | native | 188 |
| Chilika Lake/Lagoon | Lagoon | native | 95460 |
| Ganges | River (basin) | native | 4832 |
| Godavari | River (basin) | native | 51036 |
| Gulf of Oman | Sea/Bay/Gulf | native | 47613 |
| Indian Ocean | Sea/Bay/Gulf | native | 188 |
| Indonesian Sea | Sea/Bay/Gulf | native | 7050 |
| Malacca Strait | Sea/Bay/Gulf | native | 121464 |
| Mekong | River (basin) | questionable | 12693 |
| Oriental | Zoogeographic realm | endemic | 45255 |
| Pacific Ocean | Sea/Bay/Gulf | native | 188 |
| Persian Gulf | Sea/Bay/Gulf | native | 47613 |
| South China Sea | Sea/Bay/Gulf | native | 36648 |