Sea devil

Webster's Dictionary of the English Language

·- The Angler.

II. Sea devil ·- Any large cephalopod, as a large Octopus, or a giant squid (Architeuthis). ·see Devilfish.

III. Sea devil ·- Any very large ray, especially any species of the genus Manta or Cepholoptera, some of which become more than twenty feet across and weigh several tons. ·see also Ox ray, under Ox.