Despite the "surname" Antarcticus, this large and predatory crustacean does not occur in cool and Antarctic waters, as one might assume, but in tropical, warm seas at a depth of up to 20 meters.
Divers will find it very difficult to spot the crab during the day, as the crab hides in crevices and caves in rock and coral reefs to hide until dusk.
As night falls, the crab goes on a rampage to prey on snails, mussels, shrimp, smaller crustaceans and sea urchins.
He effortlessly cracks the protective armor of his prey with his pincers and immediately devours his prey.
Due to its predatory diet, it is not a candidate for a domestic reef aquarium with its typical inhabitants.