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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Helmet jellyfish ： ウィキペディア英語版 Helmet jellyfish The helmet jellyfish (''Periphylla periphylla'') is a luminescent, red-colored jellyfish of the deep sea, belonging to the order Coronatae of the phylum Cnidaria. == Reproductive cycle == ''P. periphylla'' represents an exception, very rarely found in the phylum ''Cnidaria'': the medusae go through no polyp stage, thus presenting a "holopelagic" life cycle. The medusae strew fertilized eggs in open water and these develop directly into medusae, whose development rests entirely upon the egg's high yolk supply. The ephyra stage common among other jellyfish is not to be observed in ''P. periphylla''. 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「Helmet jellyfish」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.