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

The limited oxygen supply in Subnautica 2 can hold you back from exploring the depths of the ocean. Having to resurface every 45 seconds becomes annoying after a while, leading you to seek ways to ...

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 ...

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