The biggest crab in the world, the Japanese spider crab ... other crustaceans and ocean detritus. The red rock crab (Cancer productus) inhabits the western coast of North America (all the way ...

Snow crabs and king crabs, though similar in appearance, differ significantly in size, habitat, leg structure, and ...

They’re also one of the world’s largest arthropods ... blend in with the rocks on the ocean floor. Those round shells and long legs give Japanese spider crabs an arachnid-like look, hence ...

The coastal areas are where humans have the most direct impact on the ocean's resources. Coconut crabs are the largest land crabs, but they begin life in the sea. The adults can weigh up to four ...