Margarites pilsbryiMargarites pilsbryi is a species of sea snail, a marine gastropod mollusk in the family Margaritidae,.DescriptionIt has a flat spiral shell similar to that of a garden snail its size varies from 3 mm to 6 mm. The color of the shell can either be a pinkish red or a light brown.DistributionThis species occurs in the Sea of Okhotsk and the Sea of Japan.