Sea Serpent

Sea serpents is a type of sea monster often considered looking like some sort of dragon that appears in various mythologies and sailors tales. Stories and sightings of them have been told worldwide. There has been various theories what sea serpents could be ranging from prehistoric relicts such as marine reptiles or prehistoric cetaceans, undiscovered species yet to be discovered or simply mistaken identity notably the oarfish.

It appeared in Sea Serpent of Season 4 where Elise Mooney and Tanner Noble of the Enigma Corporation were called in by the Spanish government to investigate regarding mysterious disappearances of people off the coast caused by the creature.