1) Conchs 2) Family strombidae 3) Mollusk family 
Strombidae, commonly known as the true conchs, is a taxonomic family of medium-sized to very large sea snails in the superfamily Stromboidea. The family Strombidae includes the genera Strombus, Lambis, Tibia, and their allies. In the geological past, many more species existed than are now extant. The term true conchs, being a common name, does not...
(from the article `gastropod`) ...StrombaceaFoot and operculum greatly modified and move with a lurching motion; feed on algae and plants; some species used for human food; conchs ...
[n] - conchs
family Strombidae noun the family of conchs