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Pachymatisma johnstonia : ウィキペディア英語版 | Pachymatisma johnstonia
''Pachymatisma johnstonia'' is a species of demosponge belonging to the family Geodiidae. A species of north east Atlantic coasts, this is a usually grey encrusting sponge with large prominent oscula and a pale yellow interior. The size and form depends largely on the extent of its exposure to waves. In heavily wave-exposed locations, it is usually small and thin but in more sheltered places can grow to over 50 cm across and 15 cm thick. ==References==
*(''Pachymatisma johnstonia'' at World Register of Marine Species ) *
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「Pachymatisma johnstonia」の詳細全文を読む
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