Aspect: Fat white-studded green main legs with large claws, smaller legs are brownish, but covered in smaller studs. Population: Occasional. Notable feature: Bright green eyes topped with eyelash-looking cirri. Long brown banded antennae. Considered the largest Caribbean hermit crab, hence squats Queen Conch shells. Environment: Sandy bottoms. Behaviour: Retracts when approached too closely, but will then slowly pull out again.