Yes, in Florida, a mini-industry that was once threatened by depletion has revived by taking advantage of a crab's regenerative capability. Formerly, gatherers of stone crabs killed the crustacean to obtain its two claws, its only marketable body parts. To save the diminishing crab population, and hence their own enterprises, the crab hunters adopted the practice of breaking off only one of the stone crab's two claws and tossing the creature back into the sea. With one claw left to defend itself and forage for food, the crab survives, grows a new appendage, and - if unlucky - suffers through the ordeal again.
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