diodora apertura

English Thesaurus

1. marine limpet having a conical shell with an opening at the apex (noun.animal)

hypernym	:	limpet,
definition	:	any of various usually marine gastropods with low conical shells; found clinging to rocks in littoral areas (noun.animal)

member meronym	:	fissurella, genus fissurella,
definition	:	type genus of the family Fissurellidae: keyhole limpets (noun.animal)