The Precursors studied the last surviving Sea Emperor Leviathan in hopes of finding a cure using its natural production of Enzyme 42. However, due to its weakness, possibly old age or illness, studies conducted showed that it was not a viable source of Enzyme 42 as the enzymes it produced was too unstable and only reverted symptoms temporarily. As the only source of Enzyme 42 on Planet 4546B, the Sea Emperor Leviathan and its children are the keys to cure the Kharaa Bacterium.

The creature is approximately two thousand six hundred years old, having massively surpassed its species' natural lifespan.Īlmost all of the Sea Emperor Leviathans died when the Kharaa Bacterium was released as it killed off their food source, leaving only the one captive adult and the eggs it was discovered with. The five eggs which still remain must be hatched at some point in the story. The captive Sea Emperor Leviathan is the last remaining adult of its species and a parent to at least seven eggs. It will also watch the player intently if they are near the Incubator Device or the aquarium Arch, quickly spinning around and coming to a rest on the aquarium's floor. Upon entering the aquarium, the Sea Emperor Leviathan will climb up to observe and speak to the player, then descend back down. After the player inserts an Ion Cube into the Incubator Device, the Sea Emperor Leviathan will speak to the player, and will move to the left side of the Alien Arch, and blow away the sand, uncovering the Arch that the player can use to access the Arch outside of the Quarantine Enforcement Platform.

It will continue to interact with the player upon entering the Aquarium, telling them what they need to do in order to hatch the eggs. It will contact the player again shortly after they have obtained the Blue Tablet, and again upon entering the Lava Lakes. The Sea Emperor Leviathan will first contact the player telepathically twenty minutes after they have attempted to deactivate the Quarantine Enforcement Platform. Whenever it communicates with the player, the screen becomes distorted in a similar way to when a Warper teleports the player, or a Mesmer hypnotizes the player. The Sea Emperor Leviathan is capable of telepathic speech, which it uses to communicate with the player at various locations around the world. When the Kharaa Bacterium was released onto the planet, many creatures died, destroying the food source of the species. It's suggested that in the past these creatures would have traveled in small herds, occasionally coming to the surface to feast on the microorganisms in the shallower water. Unlike the Sea Dragon Leviathan, the Sea Emperor Leviathan doesn't have true graspers instead, its forelimbs are two massive, paddle-like arms, which are similar to those of sea turtles.ĭespite its gargantuan size, the Sea Emperor Leviathan's diet consists solely of micro-organisms filtered from the water. The Sea Emperor Leviathan's posterior consists of seven long, yet slim tentacles ending with large tentacular clubs, with the largest being in the center, surrounded by the six smaller tentacles. It has four binocular eyes, glowing cyan in color. The creature's head is comparatively small, and quite peculiar in shape (see 'Trivia' below for more), featuring two striped antennae with glowing green lures atop its snout, two large mandibles on each side of its rather small mouth, and a glowing hollow between these mandibles. Its tentacles are adorned with bright cyan bioluminescent 'bulbs'.

The Sea Emperor Leviathan is colossal, having a stocky, entirely armored body and is predominantly pale brown in color, with shades of green.

Subnautica map sea emperor