| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Arabian Sea | Sea/Bay/Gulf | native | 12076 |
| Bay of Bengal | Sea/Bay/Gulf | native | 1479 |
| Cauvery | River (basin) | native | 45255 |
| Chilika Lake/Lagoon | Lagoon | native | 29108 |
| Ganges | River (basin) | native | 45255 |
| Godavari | River (basin) | native | 43638 |
| Gulf of Oman | Sea/Bay/Gulf | native | 188 |
| Indian Ocean | Sea/Bay/Gulf | native | 188 |
| Oriental | Zoogeographic realm | endemic | 12076 |
| Persian Gulf | Sea/Bay/Gulf | native | 188 |
| Tigris | River (basin) | native | 39702 |