The robber crab is the nickname of the coconut crab. It gets the robber crab name due to the the belief it often steals shiny, metallic objects from tents. It is currently the largest living land arthropod in the world. Interestingly, the crab has a bluish shell, much like its FFXI counterpart and may match its power: the claw pressure from a coconut crab can bend metal, which has been problematic when they are kept as pets due to their escaping from cages.