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Portunidae
Portunidae is a family of crabs which contains the swimming crabs. ==Description== Portunid crabs are characterised by the flattening of the fifth pair of legs into broad paddles, which are used for swimming.〔 This ability, together with their strong, sharp claws, allows many species to be fast and aggressive predators.
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「Portunidae」の詳細全文を読む
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