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The Campanulariidae are a family of animals in the phylum Cnidaria, or stinging-celled animals. Campanulariidae is composed entirely of hydroids, a Greek term meaning "water animals" applied to the plant-like polyp colonies of the class Hydrozoa. All species of the Campanulariidae are aquatic in habitat, primarily inhabiting coastal regions and tidal pools. ''Obelia'' contains probably the most well-known species of this phylum, and include four species. All are around 20-35cm in height with a series of branches carrying the individual polyps. One species, ''Obelia longissima'', is unique for its ability to produce obelin, a photoprotein which allows for bioluminscence. The genus ''Laomedea'' includes such species as ''Laomedea angulata'' and ''Laomedea flexuosa'', which are similar in appearance to the ''Obelia'', though they are smaller and lack a medusa stage present in ''Obelia''. ==Genera〔MarineSpecies.org (2008)〕== * ''Billardia'' * ''Campanularia'' - includes ''Campanula'' * ''Clytia'' - includes ''Phialidium'' * ''Gastroblasta'' * ''Gastroblastea'' * ''Gonothyraea'' * ''Hartlaubella'' * ''Laomedea'' * ''Multioralis'' * ''Obelia'' * ''Orthopyxis'' * ''Pseudoclytia'' * ''Rhizocaulus'' * ''Silicularia'' * ''Tulpa'' * ''Verticillina'' * ''Zelounies'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Campanulariidae」の詳細全文を読む スポンサード リンク
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