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Leviathan is a classification given to extremely large creatures of the Subnautica universe. Although the wording of the Reaper Leviathan's databank entry would seem to imply that the leviathan classification is exclusive to predatory life forms, this is not the case; any fauna species of a suitable size can be classified as a Leviathan.

Although 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.

Relation to Other Leviathans[]

Leviathan is not part of a taxonomic classification, so does not imply any of the species classified as such are related. In fact, the only two that appear to have any close relation are the Sea Emperor Leviathan and Sea Dragon Leviathan who share several features including an almost identical body shape, seven identically positioned tentacles dotted with glowing spots, two forelimbs and a pair of light-producing organs atop their snouts. These two most likely shared a common ancestor that has since diverged into a smaller, cave-dwelling predatory species and a larger, planktivorous species residing in the open ocean.

Leviathans of the Past[]

Despite being enormous when compared to the fauna of Earth, the leviathans inhabiting Planet 4546B in the present day are dwarfed by their predecessors; the three-million-year-old Gargantuan Fossil at full length is estimated to be 6-8 times longer than an adult Sea Emperor Leviathan specimen. To support a predator of such titanic proportions, many of the other creatures of that time period must have also been of colossal proportions.

The one-million-year-old Ancient Skeleton is a massive, well-intact, skeletal structure consisting of a head attached to a unique armored carapace. It's size surpasses that of the living leviathans, and gaps in the teeth are large enough for Ryley Robinson to swim through comfortably. The totality of the ancient skeleton is unknown; consequently, it's locomotion and original size cannot be pinpointed. The bulky armored skeleton is around 100 meters in length, giving it more body mass than anything alive on the planet today.

Known Leviathan Class Organisms[]

The Crater[]

Sector Zero[]

The Squidshark is about 11 meters in length, and described as "a leviathan-class predator at the smaller end of the scale" by its databank entry. However, the squidshark is excluded from the databank's leviathan tab.

Extinct Leviathan Class Organisms[]

Crater[]

Sector Zero[]

  • Frozen Leviathan: About 70 meters (230 feet) excluding tail; about 150 meters (492 feet) total.

Size Comparisons[]

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