Last Updated
：2025/11/28
swimming crab
（ plural ）
Quizzes for review
Any of many marine crabs of the family Portunidae, whose hindmost legs are flattened into paddles.
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We watched a swimming crab propel itself across the shallow bay with its flattened hind legs.
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We watched a swimming crab propel itself across the shallow bay with its flattened hind legs.
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English - English
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