Donax trunculus (
abrupt wedge shell,
wedge clam), is a bivalve species in the family Donacidae. It is native to the Mediterranean and Atlantic coasts of western Europe. It is locally known as
tellin,
tellina,
telline or "tenille" in French,
tellina or
coquina in Spanish, and
conquilha or
cadelinha in Portuguese, Um El-Kholol in Egypt, and is consumed as a food in these countries. There is a very similar shellfish in Aust
(Wikipedia)