Those round shells and long legs give Japanese spider crabs an arachnid-like look, hence their common name. These animals also have spines behind and in front of their short eye stalks.

to film the annual mass aggregation of spider crabs. These crabs come together to shed their old shells in a process called moulting. It was our first day of filming and although the crabs had ...

This amazing footage taken by a scuba diver shows THOUSANDS of spider crabs migrating at the bottom of a bay. Giles Pollock, ...