Libonectes (Southwest Swimmer) was a very long-necked plieosaur, known as an elasmosaur (a group of marine animals from the creatcious with four strong paddle-shaped limbs that lived in the sea.) An early fossil hunter thought that libonectes’s head was originally the tail of another fossil, then it was thought that their necks could move much like a snake’s body, but they are actually relatively rigid, much like those of sauropods. There were 62 bones in its long neck, which accounted for over half of its body length. Libonectes likely swam after shoals of fish and attacked from underneath to trap them in its cage like mouth. Its teeth were long, sharp, forward facing, and interlinked forming said cage for trapping its unfortunate prey.