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 ...

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 ...

There are over 800 species of hermit crabs worldwide, and almost all are ocean dwellers—though people ... hermit crabs will form a line, biggest to smallest, to see which animal fits the new ...

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 ...