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Male hermit crabs evolved larger sex organs to avoid losing homes

Male hermit crabs evolved larger sex organs to avoid losing homes

National Geographic - Jake Buehler

A study suggests hermit crabs with more valuable, easily stolen shells have evolved larger penises to more safely mate. Hermit crabs are a common sight scuttling across warm beaches, but many of these charismatic crustaceans wield something surprising and hidden—very large penises, sometimes half …

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