Male fiddler crabs are lopsided, with one claw that seems about the right size and one very large claw. As you might expect, one function of the larger claw is to attract females. The males drum with ...

A parade of mangroves and now, crabs, are heading north. Atlantic mangrove fiddler crabs have been found nearly 200 miles further from their historic northern limit in Jacksonville, Fla., according to ...

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 ...

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 ...

The male European fiddler crab attracts his mate by performing a courtship dance. New research says that dance isn't just notable for its visuals — it's notable for its vibrations, too. During ...

A study has 'listened in' to the fascinating courtship displays of Fiddler crabs using geophones. The findings provide new insights into how the animals communicate effectively on the noisy seashore.