Home Acknowledgments Conventions Glossary Maps References Links Articles Thumbnails Species list Next order	Gymnosomata The order Gymnosomata (often referred to as "sea angels") includes specialized pelagic predators that lack shells and use an expanded portion of the foot for swimming. Most have elongate bodies. Recently, some sources have recombined them with the Thecosomata under the Pteropoda (known as "sea butterflies"). Little is known about the Hawaiian fauna. In addition to Cliopsis krohni, four other species have been recorded from the north Pacific near Hawaii based on the range maps in Pelagic Molluscs on the Marine Species Identification Portal: Hydromyles globulosa (Rang, 1825) in the family Hydromylidae Notobranchaea inopinata Pelseneer, 1887 in the family Notobranchaeidae Pneumodermopsis ciliata (Gegenbaur, 1855) in the family Pneumodermatidae Thliptodon diaphanus (Meisenheimer, 1903) in the family Clionidae Cliopsidae
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