
As the only source of Enzyme 42 on Planet 4546B, her and her children are the keys to cure the Kharaa Bacterium. It is possible that the Aquarium has some form of life support system in place that allowed her to live to such an advanced age, as it was noted that one-thousand six-hundred was already old.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. She is approximately two-thousand six-hundred years old, having massively surpassed her species natural lifespan. The five eggs which still remain must be hatched at some point in the story. The captive Sea Empress Leviathan is the last remaining adult of Her species and a parent to at least seven eggs. She 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, she will climb up onto a platform to observe and speak to the player, then descend back down. She subsequently blows away the sand, uncovering the Arch that the player can use to access the Arch outside of the Quarantine Enforcement Platform. After Ryley inserts an Ion Cube into the Incubator Device, She will speak to the player, and will move to the left side of the Alien Arch. She will continue to interact with Ryley upon entering the Aquarium, telling him what he needs to do in order to hatch the eggs. She will contact the player again shortly after they have obtained the Blue Tablet, and again upon entering the Lava Lakes. She will first contact the player telepathically either sixty minutes after attempting to deactivate the Quarantine Enforcement Platform or twenty minutes after reaching the Disease Research Facility (whichever happens first). Whenever she 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 specimen present in game is capable of telepathic speech, which she uses to communicate with the player at various locations within the map. When the Kharaa Bacterium was released onto the planet, many creatures died, destroying the food source of her species. It's suggested that in the past these creatures would have traveled in small herds in the bottom of the trenches (that being the Crater Edge), occasionally coming to the surface to feast on the microorganisms in the shallower water. This Leviathan also has an orifice in the back with an unknown purpose, most likely for creating enzyme 42 or laying eggs.ĭespite her gargantuan size, her diet consists solely of micro-organisms filtered from the water, much like real-life Baleen whales and Blue whales. It is shown to be primarily used for stabilization while swimming and possibly used for defense against predators. Unlike the Sea Dragon Leviathan, the Sea Emperor Leviathan lacks true graspers instead, her forelimbs are two massive, paddle-like arms, similar to that of turtles. Its tentacles are adorned with bright cyan bioluminescent "bulbs." Her posterior consists of seven long, yet slim tentacles, with the largest being in the center, surrounded by the six smaller tentacles. The Sea Emperor Leviathan has four binocular eyes which glow cyan in color. Her head is comparatively small with a rather perculiar shape (see "Trivia" below for more), featuring two striped antennae with glowing green lures atop the snout, two large mandibles on each side of the mouth, and a glowing hollow between said mandibles.

The Sea Emperor Leviathan is a colossal being, with a stocky body that is covered in armor and is predominantly pale brown with shades of blue and green. It is sapient and telepathic, but unlike most Leviathans, it is not aggresive.


The Sea Emperor Leviathan is the largest of the living Leviathan class fauna found within the crater in Subnautica.
