Hermit Crabs Fighting Sanibel Island Florida Usa Stock Photo 103455386Color Image,Confrontation,Day,Fighting,Florida - USA,Full Length,Hermit Crab,Horizontal,No People,Outdoors,Photography,Sanibel Island,Togetherness,Two Animals,USA,WildlifePhotographer Gallo ImagesCollection: Vetta Hermit crabs are decapod crustaceans of the superfamily Paguroidea. They are not closely related to true crabs. Hermit crabs are quite commonly seen in the intertidal zone: for example, in tide pools. Most species have long, soft abdomens which are protected from predators by a salvaged empty seashell carried on the crabs back, into which the crabs whole body can retract. Most frequently hermit crabs use the shells of sea snails; the tip of the hermit crabs abdomen is adapted to clasp strongly onto the columella of the snail shell.