The Mystery of the Two Horned Narwhal Chris and Martin are arguing with each other about which is better, horns or antlers, when they get a call from Wild Kratts kid Nua about a whale with a unique hornlike tusk: the narwhal. The Wild Kratts travel to the Arctic to investigate the structure and purpose of the narwhal's tusk. But when the Kratt Brothers find an Inuit carving depicting a narwhal with two tusks, the Wild Kratts decide to find out whether the two-tusked narwhal is real or just a myth.