| Singular | Plural | |
| Nominative | море | моря |
| Accusative | море | моря |
| Genitive | моря | морей |
| Prepositional | море | морях |
| Dative | морю | морям |
| Instrumental | морем | морями |
| There are only a few nouns that follow this pattern. They include по́ле “field,” го́ре “grief” (singular only). |
||