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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 Portunus sayi ： ウィキペディア英語版 Portunus sayi ''Portunus sayi'', the sargassum swimming crab, is a species of pelagic crab in the family Portunidae. It is found in the western Atlantic Ocean and the Caribbean Sea where it makes its home among floating mats of ''Sargassum'' seaweed. It was named in honour of the American naturalist Thomas Say. ==Description== ''Portunus sayi'' grows to a length of about . Its smooth, shiny carapace is nearly twice as broad as it is long and has six frontal teeth on each side. The chelipeds (claws) are larger in males than in females and the spines they bear have orange margins. The carapace, claws and legs are usually pale brown with large white or flesh-coloured blotches but the brown colour may have a purplish or greenish tinge. This crab, like other members of its family, is specially adapted for swimming rather than walking as its fourth pair of legs are modified with flattened, paddle-like surfaces. It swims sideways rather than forwards and can move surprisingly swiftly. 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「Portunus sayi」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.