n.
Marine snail whose shell has a broadly triangular outer whorl and a wide lip, often jutting toward the uppermost point.
True conchs (family Strombidae) feed on fine plant matter in warm waters. The queen conch ( Strombus gigas ), found from Florida to Brazil, has an ornamental shell; the pink opening into the first whorl of the shell may be 12 in. (30 cm) long. The clam-eating fulgur conchs (family Melongenidae) include the channeled conch ( Busycon canaliculatum ) and the lightning conch ( B. contrarium ), both about 7 in. (18 cm) long and common on the U.S. Atlantic coast. See also whelk .