(n)extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned, Syn.manta ray, devilfish
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. An extremely large pelagic tropical ray of the family Mobulidae, that feeds on plankton and small fishes. It is usually harmless but its size (up to 20 feet across and up to a ton in weight) make it dangerous if harpooned. Called also manta, sea devil and devilfish. See also Cephaloptera and Sea devil. [ WordNet 1.5 +PJC ]