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Members of the genus ''Metridium'', also known as plumose anemones, are sea anemones found mostly in the cooler waters of the northern Pacific and Atlantic oceans. They are characterized by their numerous threadlike tentacles extending from atop a smooth cylindrical column, and can vary from a few centimeters in height up to one meter or more. In larger specimens, the oral disk becomes densely curved and frilly. ==Species== The following species are recognised in the World Register of Marine Species (WoRMS):〔 *''Metridium canum'' Stuckey, 1914 *''Metridium dianthus'' *''Metridium exilis'' Hand, 1956 *''Metridium farcimen'' (Tilesius, 1809) *''Metridium huanghaiensis'' Pei, 1998 *''Metridium parvulum'' McMurrich, 1904 *''Metridium senile'' (Linnaeus, 1761) 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「Metridium」の詳細全文を読む スポンサード リンク
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