The Pneumodermatidae are a family of sea angels, or small floating predatory sea snails or sea slugs. They are pelagic marine heterobranch opisthobranch gastropod mollusks in the clade Gymnosomata.
These small pelagic snails lack shells (except in their early embryonic stage). They are carnivores, equipped with swimming parapoda (fleshy, wing-like outgrowths), strong jaws, and grasping tentacles, often with suckers resembling those of cephalopods.
Genera within the family Pneumodermatidae include:
Genus: Pneumoderma de Roissy, 1805
Pneumoderma atlanticum Oken, 1815Pneumoderma degraaffi van der Spoel & Pafort-van Iersel, 1982 – distribution: Sargasso Sea, length: 11.8 mmPneumoderma mediterraneum van Beneden, 1838 – distribution: Florida, Brazil, Mediterranean, length: 20 mmPneumoderma peronii Lamarck, 1819 – distribution: Red SeaPneumoderma violaceum d'Orbigny, 1836 – distribution: Bermuda, oceanic, length: 25 mm, description: This pteropod grabs its prey with two powerful suckers, each with about 30 suctorial disks, then it bulges out its long proboscis.Pneumoderma violaceum pacificum Dall, 1871Pneumoderma violaceum violaceum d'Orbigny, 1836Genus: Pneumodermopsis Keferstein, 1862
Pneumodermopsis canephora Pruvot-Fol, 1924Pneumodermopsis ciliata (Gegenbaur, 1855) – distribution: circumglobal, oceanic, description: possesses five tentacles, each ending in a big suctorial diskPneumodermopsis macrochira Meisenheimer, 1905 – distribution: oceanicPneumodermopsis michaelsarsi Bonnevie, 1913 – distribution: Bermuda, oceanicPneumodermopsis oligocotyla Massy, 1917Pneumodermopsis paucidens (Boas, 1886) – distribution: Brazil, oceanic, length: 5 mmPneumodermopsis pupula Pruvot-Fol, 1926Pneumodermopsis spoeli Newman & greenwood, 1988 – Distribution: Australia.Pneumodermopsis teschi van der Spoel, 1973 – distribution: oceanicGenus Schizobrachium Meisenheimer, 1903
Schizobrachium polycotylum Meisenheimer, 1903 – distribution: oceanicGenus Spongiobranchaea d'Orbigny, 1836
Spongiobranchaea australis d'Orbigny, 1836 – distribution: Argentina, Australia, sub-Antarctic, Antarctica, oceanic, length: 22 mmSpongiobranchaea intermedia Pruvot-Fol, 1926 – distribution: oceanic imageGenus Abranchaea Zhan Fu-Sui, 1975
Abranchaea chinensis Zhan Fu-Sui, 1975Genus Platybrachium Minichev, 1976
