Maria and Oceanus
| Latin Name | English Name | Lat. | Long. | Diameter (km) |
|---|---|---|---|---|
| Mare Anguis | Serpent Sea | 22.6° N | 67.7° E | 150 |
| Mare Australe | Southern Sea | 38.9° S | 93.0° E | 603 |
| Mare Cognitum | Sea that has become known | 10.0° S | 23.1° W | 376 |
| Mare Crisium | Sea of Crisis | 17.0° N | 59.1° E | 418 |
| Mare Fecunditatis | Sea of Fecundity | 7.8° S | 51.3° E | 909 |
| Mare Frigoris | Sea of Cold | 56.0° N | 1.4° E | 1596 |
| Mare Humboldtianum | Sea of Alexander von Humboldt | 56.8° N | 81.5° E | 273 |
| Mare Humorum | Sea of Moisture | 24.4° S | 38.6° W | 389 |
| Mare Imbrium | Sea of Showers | 32.8° N | 15.6° W | 1123 |
| Mare Ingenii | Sea of Cleverness | 33.7° S | 163.5° E | 318 |
| Mare Insularum | Sea of Islands | 7.5° N | 30.9° W | 513 |
| Mare Marginis | Sea of the Edge | 13.3° N | 86.1° E | 420 |
| Mare Moscoviense | Sea of Muscovy | 27.3° N | 147.9° E | 277 |
| Mare Nectaris | Sea of Nectar | 15.2° S | 35.5° E | 333 |
| Mare Nubium | Sea of Clouds | 21.3° S | 16.6° W | 715 |
| Mare Orientale | Eastern Sea | 19.4° S | 92.8° W | 327 |
| Mare Serenitatis | Sea of Serenity | 28.0° N | 17.5° E | 707 |
| Mare Smythii | Smyth's Sea | 1.3° N | 87.5° E | 373 |
| Mare Spumans | Foaming Sea | 1.1° N | 65.1° E | 139 |
| Mare Tranquillitatis | Sea of Tranquility | 8.5° N | 31.4° E | 873 |
| Mare Undarum | Sea of Waves | 6.8° N | 68.4° E | 243 |
| Mare Vaporum | Sea of Vapors | 13.3° N | 3.6° E | 245 |
| Oceanus Procellarum | Ocean of Storms | 18.4° N | 57.4° W | 2568 |
There was also a region on the Lunar farside that was briefly misidentified as a mare and named Mare Desiderii (Sea of Dreams). It is no longer recognized. Other former maria include:
- Mare Parvum ("Small Sea"), immediately to the east of Inghirami
- Mare Incognitum ("Unknown Sea")
- Mare Novum ("New Sea"), northeast of Plutarch
- Mare Struve ("Struve's Sea"), near Messala
Read more about this topic: List Of Maria On The Moon