Aspect: Red-marroon carapace and legs. Carapace is covered in warty bumps, legs covered in spiny nodules. Population: Common, very visible during night dives. Notable feature: Large claws distinguishes it from Hairy Clinging Crab (q.v.) Environment: Around coral boulders and rocks under which it hides during the day, but can also live on ship wrecks. Behaviour: Will stay quiet if not approached too aggressively.