What is a Land Hermit Crab?

Land-based (or terrestrial) hermit crabs are of the family Coenobitidae. In some parts of the world they are also known as tree crabs as some like to live in and can be found climbing trees. In the wild, they can live for many months out of water but usually return to the shore quite regularly to wet themselves, change shells and release larvae from hatching eggs. Land hermit crabs are arthropods of the order Decapoda and Infraorder Anomura. Hermit Crabs are not true crabs, as their abdomen is not protected by a calcified armour.