What’s the purpose of the Atlantic Sand Fiddler Crab’s giant claw? Museum Keeper Jason explains that for male fiddler crabs, the oversized claw works as a weapon, a warning, and a signal to attract a mate. If he loses it, he can grow a new one after several molts. It’s usually weaker, but since showing off matters more than strength, he manages just fine. #Science #ScienceFacts #PopularScience #WeirdFacts #MarineBiology