Increase your oxygen storage with the High Capacity Air Tank upgrade in Subnautica 2.

If you want to have more oxygen underwater in Subnautica 2, you'll have to upgrade your Air Tank by getting its recipe at ...

Oxygen is crucial to survival in Subnautica 2, but your starting O2 meter can feel a bit restrictive. The rarest resources (and coolest stuff) can only be found in the deepest parts of the alien ocean ...

The limited oxygen supply in Subnautica 2 can hold you back from exploring the depths of the ocean. Having to resurface every ...