In the animal world, attracting a mate often comes down to a show of skill. Birds sing. Deer fight. Some crabs wave. For one species called the waving crab, this gesture is everything. Males raise and ...

A robot crab called "Wavy Dave" has helped scientists learn about crab mating behaviors. Male fiddler crabs have one oversized claw, which they use to attract females by standing outside their burrow ...

TAMPA, Fla. — Don't be alarmed if you see two horseshoe crabs latching onto each other and walking toward the shore. It's just their ancient mating ritual. Although horseshoe crabs mate year-round, ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. The constant thrum of ship engines and other human noises can be a real nuisance for ...

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Crabs reproduce sexually, so sperm from a male crab must fertilize an egg from a female crab to produce offspring that are genetically different from both parents. Yet, crabs are not exactly built to ...