Leviathan

The leviathan can grow up to 40 meters in length in deep ocean.

The leviathan is the largest predator of sperm whales but mostly feeds on smaller deep sea dwellers like krakens or feroxes. Its jaw unhinges to a size of 3 meters high and 2 meters across to swallow some whales whole. It is attracted to whales and boats about the size of whales far from shore. Once its jaws lock onto its prey the long serrated tail curls around and squeezes the prey to death.

It typically has three long filaments sprouting from the middle of the head; these are the detached and modified three first spines of the anterior dorsal fin. This first spine (the longest) protrudes above the fish's eyes, and terminates in an irregular growth of flesh at the tip of the spine. The spine is movable in all directions, and can be wiggled so as to resemble a prey animal. This mimicry lures smaller predators towards the leviathan which will swallow them whole.

The leviathan competes with the megalodon for prey on the borders of their territory.