Dosinia exoleta, common name the rayed artemis, is a saltwater clam, a marine bivalve mollusc in the family Veneridae, the venus clams.
The shell of an adult Dosinia exoleta can be as large as . These shells can be white, yellowish or pale brown, with darker blotches. They are circular in shape, with a concentric sculpture of fine ribs. They have a very good flavour.
This species is present in the Boreal-Atlantic zone and Mediterranean Sea. It lives on the lower shore and muddy flats to depths of about .