David Johnson: So in 2014, we were on a muddy bank in the marsh up here in Massachusetts, and I saw this small crab scuttle across the mud bank and pop into a hole. And so I dug out the crab, and it ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Fiddler crabs and snapping shrimp rely on enlarged claws to impress ...

The St. Johns River is a crabby kind of place, meaning that there are a number of crab species other than the popular and personal favorite, the blue crab, present in the river. Most of them are small ...

This story was originally produced by the New Hampshire Bulletin, an independent local newsroom that allows NHPR and other outlets to republish its reporting. David Johnson had been working in the ...

A research team led by Joe Wilde from the Centre for Research in Animal Behaviour (CRAB) at the University of Exeter, UK, created a robotic crab named 'Wavy Dave' that moves its claw. They observed ...