Sailfin

Information
The Sailfin is a tropical wetland reptile that looks like an alligator or crocodile neither in actually. Regarding its anatomy, it has a finely veined "sails" of hide between its dorsal spines that both act to regulate the creature's temperature and act as a lure for some of its favorite amphibious prey.

Trivia

 * The spines of the sailfin are bioluminescent.