carry-on-my-wayward-butt: dynamicoceans: Swimming crabs are characterized by the flattenin
carry-on-my-wayward-butt:dynamicoceans:Swimming crabs are characterized 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.Videonyoom -- source link
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