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Every time the deposit on it is completely depleted the pillar will rise up and, after a while, fabricate a new deposit, after which the pillar will lower back down. A large pillar, called the Ion Cube Fabricator, lies in the center of the chamber, which is used to create Large Ion Cube Deposits. It is huge and roughly octagonal in shape. The first room in the Primary Containment Facility.
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But the aquarium was not a suitable environment for the eggs to hatch which was built to match the ideal environment for an adult Sea Emperor Leviathan, which differ from the ideal conditions for a juvenile Emperor, causing the eggs to go into a form of natural stasis for a seemingly indefinite amount of time, kept alive by the Incubator. Five of the eggs that the Sea Emperor Leviathan was found with were placed in the Incubator Device to stimulate the hatching process as it was deduced that the young would be a more viable source of the cure, rather than their parent who was weak.
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Over time, the aquarium became a thriving ecosystem with the Sea Emperor Leviathan at the heart. However, as creatures began migrating into it via the Arches, they brought with them flora seeds along with loose sand and mud. The aquarium section was originally all inorganic with two Alien Arches set up inside, one leading back into the Antechamber's moonpool and another leading to just outside the Quarantine Enforcement Platform. It was built to contain the Sea Emperor Leviathan after it was discovered that it was immune to the Kharaa Bacterium. Five Sonic Deterrent devices can be found in the area around the base, preventing attacks on the facility from the native fauna. The Primary Containment Facility, like the other Alien Bases, was built a little under one thousand years ago. The Primary Containment Facility requires the Blue Tablet to unlock, which is found in the Alien Thermal Plant. There are two entrances to the Lava Lakes containing the Primary Containment Facility co-ordinates are -300 -1270 -150 and 90 -1240 360, southeast, and directly north of the Lava Castle, respectively. It was built by the Precursor Race around one thousand years ago and is home to the last remaining Sea Emperor Leviathan, along with the five remaining Sea Emperor Leviathan Eggs. As the largest known Leviathan, it truly reigns supreme, dwarfing all other creatures in Subnautica.The Primary Containment Facility, also known as the Emperor Containment Facility, Sea Emperor Prison or merely the Prison, is an Alien Base located within the Lava Lakes that serves as the final major story location.
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Finally, we reach the pinnacle of Leviathan size with the Sea Emperor Leviathan, standing at approximately 200 meters. These Leviathans dominate their surroundings, instilling fear with their colossal frames and formidable strength. The Ghost Leviathan and the Sea Dragon Leviathan share a similar stature, both measuring around 110 meters. Its dimensions surpass those of the previous Leviathans, showcasing a more substantial presence in the underwater world. Moving further up the scale, we encounter the Sea Treader Leviathan, which reaches an impressive size of around 70 meters. While significantly larger than the Reaper, it still falls short in size when compared to some of the other Leviathans. Next up is the Reefback Leviathan, measuring around 55 meters. Although intimidating, it pales in comparison to its larger counterparts. The Reaper Leviathan, with an estimated size of around 20 meters, is one of the smaller Leviathans in the game. When comparing the sizes of the various Leviathans in Subnautica, a clear distinction emerges:
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