| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Andaman Sea | Sea/Bay/Gulf | native | 4833 |
| Bay of Bengal | Sea/Bay/Gulf | native | 1479 |
| Brahmaputra | River (basin) | native | 4833 |
| Chilika Lake/Lagoon | Lagoon | native | 29108 |
| Ganges | River (basin) | native | 4833 |
| Indian Ocean | Sea/Bay/Gulf | native | 7050 |
| Indonesian Sea | Sea/Bay/Gulf | native | 7050 |
| Oriental | Zoogeographic realm | endemic | 4833 |
| Pacific Ocean | Sea/Bay/Gulf | native | 1479 |