| Feature | Details |
|---|---|
| Category | Tools |
| Source | Crafting |
| Description | Rapid flotation bladder for emergency ascents. Can be inhaled to supply a few seconds of air. |

The Air Bladder is a tool that allows the player to quickly ascend to the surface or supply an emergency burst of oxygen.
Recipe
This recipe is available at the start of the game.
| Ingredient | Amount |
|---|---|
| Titanium | 2 |
| Rubber | 1 |
Crafted at: Fabricator
Appearance
The Air Bladder features a simple design, consisting of a handle, main body, and an orange bag on each side which fills with air when the device has a charge. An orange button is located on the handle to trigger the device.
Usage
The Air Bladder stores 25 units of oxygen.
- Rapid Ascent: It can be used to propel upward, causing the player to rise up to 116 meters from the point of activation. This action can be prematurely canceled by unequipping the Air Bladder, having your ascent blocked, or opening the PDA.
- Emergency Oxygen: It can also be used to restore 1 unit of oxygen to the player, for a total of 25 when full. This consumes all remaining charge that cannot be recovered until the player swims to the surface or enters a powered habitat. The ability to propel upwards will also be disabled.
Databank Entry
OPERATING INSTRUCTIONS
Equip to quick-access toolbelt. Trigger to shoot to the surface.
Use alternate trigger to inhale 15 seconds of oxygen.
BACKGROUND
The reusable air bladder is a self-rescue and mobility tool for shallow water divers.
- Internal pump (the same unit used by the All Environment Respiration tank) stores pressurized air
- Trigger the unit to release air into bladders, inflating them to full buoyancy
- Maintain a tight grip while the bladder lifts you to the surface
If the diver strikes an obstacle (such as a cave roof) the unit will automatically halt its ascent to avoid trapping the diver.
Bite down on the relief valve to inhale stored air, providing around fifteen seconds of extended consciousness.
If you experience sharp joint pains after ascending with the air bladder, you are suffering barotrauma ("the bends"). Your AEP suit should correct this issue automatically. If pain continues, consult a medical specialist or a biobed for treatment options.
Gallery
In Game

Trivia
- Currently the Air Bladder utilizes the model of its Subnautica counterpart; it is most likely being used as a placeholder.