Ecrobia maritima is a species of very small aquatic snail, an operculate gastropod mollusk in the family Hydrobiidae.

[2] The size of an adult shell reaches 4 mm.

Ecrobia maritima live in Pomorie Lake, a hyperhaline lagoon in eastern Bulgaria.

Western Europe, Tunisia, the Peloponnesus and the Corinthian Gulf, all in the Ionian Sea, as well as — shockingly — the Black Sea coast in Romania, are habitats for E. ventrosa.

[3][4] This Hydrobiidae-related article is a stub.