Potomida littoralis is a species of bivalve belonging to the family Unionidae.

[1] In the Iberian Peninsula, gravid females are observed from March through October, with hatching occurring in September.

[1] According to the International Union for Conservation of Nature, this species is endangered and in decline.

[1] Water extraction is harming populations in Portugal, Syria, Lebanon and Israel.

[1] Canalization of river channels, water pollution and dam construction are also threats.