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.

The blue crab species Discoplax celeste is only found on Christmas Island. It is one of more than 20 species of land crab on the island. With more than 150 million red crabs on Christmas Island ...

Atlantic Blue crab - this crab has a blue-brown shell and ... this sweet-flavoured crab has no large claws and, indeed, resembles a big spider. Crabmeat is just as good eaten hot as it is cold.