The Mudflat Fiddler Crab

A male mudflat fiddler crab (Uca rapax) waves its huge claw to impress females and threaten male competitors. More about the animals and plants living in mangrove ecosystems can be found in the Mangroves section.

A male mudflat fiddler crab (Uca rapax) waves its huge claw to impress females and threaten competitors.
Steven Paton/Smithsonian Tropical Research Institute

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