Of the 60,000 species of crustaceans on Earth, Japanese spider crabs are the largest, spanning up to 12.5 feet from the tip of one front claw to the other. They’re also one of the world’s ...

The giant Japanese spider crab. This is the biggest crab in the world. ANDY TORBET:Their bodies can grow as big as a basketball, and their leg span, from tip to tip, can be up to 4 metres.