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 ...

David Johnson had been working in the salt marshes of Plum Island, just south of New Hampshire’s border, for about a decade when he spotted an unusual small crustacean descend quickly into a burrow in ...

While cruising the Texas coast this week during my Beachcombing survey, I came across one of the most entertaining — and ecologically important — residents of our shoreline: the fiddler crab. Easily ...

A decade ago, I stood on the muddy banks of the Great Marsh, a salt marsh an hour north of Boston, and pulled a thumb-sized crab with an absurdly large claw out of a burrow. I was looking at a fiddler ...

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 ...