A Leviathan is a colossal aquatic like predator found in the oceans of Shear. They are not seen alive throughout the game but instead as dead eaten hollowed out corpses, because of this, they leave no buffs, perks, or health to the hunters or the monsters. There is a decaying Leviathan corpse that can be found near the Weather Control Tower in a Reaver den. Leviathan were most likely colossal lone predators capable of attacking most if not anything on Shear as long as they stay in the water.
- In addition to the wildlife, Torvald makes reference to a monster called "Leviathan".