| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Acheloos | River (basin) | native | 59043 |
| Aliakmon | River (basin) | native | 59043 |
| Balkan river drainages and lakes | River (basin) | native | 59043 |
| Bay of Biscay river drainages and lakes | River (basin) | native | 59043 |
| Corsica basins | River (basin) | native | 59043 |
| Corsica Island | Sea/Bay/Gulf | native | 96325 |
| Cote Azur | River (basin) | native | 59043 |
| Crete Island | Sea/Bay/Gulf | native | 41624 |
| Cyprus basins | River (basin) | native | 59043 |
| Eastern Mediterranean river drainages and lakes | River (basin) | native | 59043 |
| Ebro | River (basin) | native | 59043 |
| Garonne | River (basin) | native | 40476 |
| Greek islands basins | River (basin) | native | 59043 |
| Iberian main basins | River (basin) | native | 59043 |
| Italy main basins | River (basin) | native | 59043 |
| Lugano | Lake | native | 59043 |
| Maggiore | Lake | native | 59043 |
| Palearctic | Zoogeographic realm | endemic | 4342 |
| Po | River (basin) | native | 59043 |
| Rhône | River (basin) | native | 59043 |
| Sardinia basins | River (basin) | native | 59043 |
| Sicily basins | River (basin) | native | 59043 |