Although they are actually young Shogun Ceanataurs, they appear simply as a re-colored Hermitaur with sharper claws, leg stubs and a higher-edge shell. The shell on their back was actually grown by the crab itself, only when they grow much larger, into a Shogun Ceanataur, they will replace it with a Gravios skull.
They are able to spit a small ball of purple fluid at an enemy, poisoning them. Sometimes, a Ceanataur may wait beneath the ground for prey or a hunter to pass, jumping out of ground and striking them when they walk over. A Ceanataur that's burrowed underground can be spotted by the puffs of dust that it regularly spits out.
They live mainly in Volcanoes. Their extremely sharp claws allow them to tunnel through the volcanic rock in their habitats.
Monster Hunter Freedom 2 / Monster Hunter Freedom Unite
An adolescent Carapaceon with an organic shell firmly placed on its back. Once grown, this shell will be replaced by a giant monster's skull. Mainly living in volcanic zones, it is very aggressive, and not to be underestimated.
Throwing a Sonic Bomb near a Ceanataur will briefly immobilize it. Small Barrel Bombs thrown by a Felyne Comrade wll also have the same effect.