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 ...

The fiddler crabs can be seen performing their instinctual choreography through the summer ...

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 ...

A fiddler crab is a crab species from the genus Uca. They are native to brackish environments, which are made of part freshwater and part saltwater, all over the world. Fiddler crabs get their name ...

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 ...

Tiny crabs have secretly been playing an “unheralded role” in cleaning up the planet by hoovering up microplastics. A new study, published in the journal Global Change Biology, tracked a population of ...

The research underscores growing concerns about how ultra-small plastic particles move through marine ecosystems and into foods people rely on. Researchers studying mangrove forests in Colombia found ...

SYDNEY — In the world of fiddler crabs, the best form of protection is, apparently, prostitution, according to an Australian study published Wednesday. Researchers from the Australian National ...

"Some years it's definitely smaller than others; this year was not a small year," said island resident Monique Greyson An impressive number of baby red crabs have survived their exit from the sea ...