Semibalanus balanoides, an acorn barnacle common on rocks and other substrates in the intertidal zone of northwestern Europe and both coasts of North America.

plural of acorn barnacle

Any of several species of stalkless barnacles in the genus Balanus. / Any barnacle in the order Sessilia.

plural of barnacle goose

plural of rock barnacle

A species of large barnacle Austromegabalanus psittacus and its edible flesh, native to Peru and Chile

plural of giant barnacle

Any barnacle, of the superfamily Coronuloidea, that attach themselves to whales

plural of whale barnacle

Synonym of gooseneck barnacle (“Pollicipes pollicipes and related crustaceans”)