European cowrie  (Trivia monacha)

This cowrie is found around most British coasts (2). It is found as far south as the Mediterranean, and reaches the extreme north of its range in western France and Britain (3).

Found in association with its prey, colonial sea squirts (ascidians) including Botryllus schlosseri and Botylloides leachi (2) on the lower shore and in the sublittoral zone of rocky shores. It may also live in estuaries (3).