Titan Holefish in Subnautica: Below Zero are a fauna species found in the Sparse Arctic and the two Arctic Regions. This smoke, over time, causes the player to run out of oxygen and suffocate. If a fire starts in the Cyclops, it will produce smoke. This can be counteracted completely by equipping a Rebreather, which will cancel out all depth debuffs. When diving less than 100m, the player will consume one unit per second when diving between 100m and 200m, three units are consumed per second when diving deeper than 200m, five units are consumed per second. The depth to which the player dives affects the rate of oxygen consumption. The PDA will not play these alerts in Hardcore Mode. The PDA will also alert the player when they have 30 seconds of oxygen remaining if they are diving far from the surface. The PDA will alert the player if they have less than 10 seconds of oxygen remaining. 225 units is the maximum possible units of oxygen. The player has a base reserve of 45 units of oxygen, which can be increased by 30 units by equipping a Standard O 2 Tank. The HUD indicator for the player's oxygen supply is located on the bottom left of the screen. If they run out of power, no oxygen will be produced. Oxygen is automatically produced within a Seabase, Seamoth, Prawn Suit, and Cyclops naturally, as long as they have energy.

Interact with an oxygen-containing life form or or environmental feature (see below).

Simply swap the O 2 tank to a not yet depleted one.

Eat a raw Bladderfish (only works in survival or hardcore mode).

The player's oxygen reserve automatically replenishes whenever they: If the player runs out of oxygen, the player's screen will begin fading to black, and they will have about 4 seconds to get to an air source before the screen completely fades out and they die.

When diving, the player uses a reserve of oxygen that diminishes over time. Oxygen (O 2) is a gas that is needed by the player to survive.

Subnautica guide 2016 air sac