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This male dancing fiddler crab (Uca terpsichores) has built a sand “hood” at the entrance to his burrow, which he hopes will attract females to his humble abode—as if that big beautiful claw of his weren't enough!
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The Design of a Beautiful Weapon

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This male dancing fiddler crab (Uca terpsichores) has built a sand “hood” at the entrance to his burrow, which he hopes will attract females to his humble abode—as if that big beautiful claw of his weren't enough!
Photo

The Dancing Fiddler Crab Shows Off

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A screenshot from the video showing a fiddler crab with a large claw.
Video

Claws Out: Fiddler Crabs Do Battle

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A Caribbean hermit crab (Coenobita clypeatus) crawls on the forest floor.
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The Great Hermit Crab Migration

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A female (top left) and male Photerus annecohenae. Note that females are larger than males (sexual dimorphism) and that males have bigger eyes.
Article

You Light Up My World!

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Hundreds of illustrated red crabs gathering on sand with Santa hats.
Article

Here Comes Santa Claws

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A male mudflat fiddler crab (Uca rapax) waves its huge claw to impress females and threaten competitors.
Photo

The Mudflat Fiddler Crab

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