Diodora arcuata

Diodora arcuata, common name the arcuate limpet, is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.

Description
The size of the shell varies between 8 mm and 15 mm.

Distribution
Diodora arcuata is found in the western Atlantic Ocean (off the Bahamas and Florida)., in the Gulf of Mexico, the Caribbean Sea and the Lesser Antilles.