Leviathan is not part of a taxonomic classification so does not imply any of the species classified as such are related, at least despite their evolutionary status. Any fauna species large enough to lack natural predators can be classified as Leviathan they need not be predatory.Īlthough the term 'Leviathan' is used to refer to a large mythical aquatic creature in the real world, there is no confirmation on whether the Leviathan classification is restricted to fauna in the Subnautica universe, or is simply the term used for any species of a sufficient size. Leviathan is a classification given to extremely large creatures of the Subnautica universe. Players new to the game would want to avoid or be cautious toward this article.