Heat Tolerance is the third Adaptation unlocked in Subnautica 2. It allows the player to withstand significantly higher temperatures, granting full access to the Graveyard Biome. The Adaptation does not make the player immune to damage when near high temperature sources for extended periods, such as close proximity to a thermal vent.
Method of Obtaining
A Sonic Resonator is required to obtain this Adaptation. The Bloom Cankers, attached to both the Bloom Nodes and Angel Comb, can only be destroyed by a blast from the Sonic Resonator.
Locating the Bloom Nodes
- Western Bloom Node — Located around 230 meters West of the Lifepod under the Spider Dome.
- Northern Bloom Node — Located around 240 meters North of the Lifepod next to a Wreckage bordering the Necrolei Hills Biome.
Alternatively, both Bloom Nodes can be located by following the infected Rockbore tendrils to and from the Angel Comb.
Cleansing the Bloom Nodes
Inside of the Bloom Node Chambers, Bloom Cankers can be found placed on the Titan Rockbore tendrils. The Bloom Cankers must be destroyed with the Sonic Resonator. When all of the Bloom Cankers attached to a Bloom Node are destroyed, the player will be informed by both a PDA message and a normal coloration of the water, as the Viral Bloom is no longer depriving the water of nutrients.
Cleansing the Angel Comb's Chamber
After successfully cleansing both Bloom Nodes, the player will need to go to the Angel Comb's Chamber by following the Titan Rockbore tendrils.
The player will then need to cleanse the Angel Comb's Chamber of the Bloom Cankers, the same way that the Bloom Nodes were cleansed. Upon clearing all of the Bloom Cankers, the Angel Comb will open up, revealing the Gene Donor. Interacting with the Gene Donor grants the Heat Tolerance adaptation.
Databank Entry
Although your AEP suit can protect you against acute hot water burns for a limited time, prolonged exposure will cook your tissue like a sous vide pork tenderloin (simile flagged for review). Human proteins are sensitive to high temperature and will swiftly unravel.
Organisms that live near thermal vents can survive water above 65 degrees Celsius. Temperature may change from near 0C to above 100C in seconds. (Because pressure delays boiling, some deep hydrothermal vents can reach hundred of degrees C.) Pompeii worms, still extant in Earth's oceans, grow a coating or fleece of bacteria to survive exposure to hot water. These epsilonproteobacteria tolerate intense heat with heat shock proteins, which prevent and reverse the breakdown of cooked molecules.
Pioneer nanomachines will assist your body's cells in producing these heat shock proteins and monitor long term health effects. Regular return to safe water temperatures is advised.
Additionally, a layer of protective bacterial fleece between your skin and AEP suit will protect you from skin burns. Your PDA will monitor this bacterial culture and adjust its odor and secretions to prevent irritation. These bacteria have been derived from existing skin cultures and may help build appreciation for the role of healthy bacteria in day to day life. Say "thanks, staphylococcus."
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