Appearance
This species has a very thin and delicate shell, which has concentric growth lines and sometimes also has colored radiating bands, hence its common name, the rayed trough shell. The shell interior is white.

Mactra stultorum, (Linnaeus, 1758)
The rayed trough shell (Mactra stultorum, previously sometimes known as Mactra corallina), is a species of edible saltwater clam, a marine bivalve mollusc in the family Mactridae, the trough shells.
This species has a very thin and delicate shell, which has concentric growth lines and sometimes also has colored radiating bands, hence its common name, the rayed trough shell. The shell interior is white.
This species lives in the Black Sea, the Mediterranean coasts, and the west coast of Europe, from Norway to the Iberian Peninsula, and south to Senegal.
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