The tiny crustaceans (a male, above), which live in mangrove swamps and mudflats throughout the world, sometimes lose their claws during fights with rival males.

• 这些小螃蟹（雄性螃蟹，上图），它们生活在世界各地的红树沼泽和泥潭，有时候会在与同性竞争者的打斗中失去它们的钳。