These small pelagic snails lack a shell (except in their early embryonic stage). They are carnivores, equipped with swimming parapoda (fleshy, winglike outgrowths), strong jaws and grasping tentacles, often with suckers resembling those of Cephalopods.
A more comprehensive discussion can be found under the entry sea angel.
Genus: Pneumodermopsis Keferstein, 1862
Genus Schizobrachium Meisenheimer, 1903
Genus Abranchaea Zhan Fu-Sui, 1975
Genus Platybrachium Minichev, 1976
Patent Application Titled "Method of Manufacturing Glass Substrate for Information Recording Medium, and Suction Instrument" Published Online
May 16, 2013; By a News Reporter-Staff News Editor at Politics & Government Week -- According to news reporting originating from Washington,...