These crustaceans have been misnamed for two reasons: First, they’re not true crabs, like blue crabs, in that they don’t have a uniformly hard exoskeleton and can’t grow their own shells.

Blue land crabs have been creeping their way up the East Coast, prompting officials in Georgia, South Carolina and North ...

Georgia officials recently asked for the public's help in spotting non-native blue land crabs. But further down the coast in Florida, officials are accustomed to the spiny ocean crawlers.