Bolt-tongue

A polar cousin of the Arrowtongue, the Bolt-tongue is a Darwinian predator which uses a large arrow-tipped appendage to kill its prey. Roughly the length of an oversized Utahraptor, the bolt-tongue possesses a sonar bulge in the form of an arc running down its head. Like all predators on Darwin IV, it has no eyes and pins its prey with sonar. Unlike the closely related Arrowtongue, the Bolt-tongue has a more closed "tongue-sheathe" along with a thinner tongue.