What is a Japanese spider crab? They may look like something from ... spanning up to 12.5 feet from the tip of one front claw to the other. They’re also one of the world’s largest arthropods ...

The giant Japanese spider crab. This is the biggest crab in the ... and grab using these special claws. ANDY TORBET:'The first test is all about grip. 'I need to use my claws to open a valve.