| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Monachus monachus (Hermann, 1779) |
Mediterranean monk seal | Eastern Atlantic and the Mediterranean and Black Sea | 280 |
| Monachus schauinslandi Matschie, 1905 |
Hawaiian monk seal | Pacific Ocean | 240 |
| Monachus tropicalis (Gray, 1850) |
West Indian monk seal | Western Central Atlantic | 240 |