Learn where to find the Rebreather in Subnautica 2, how to unlock the blueprint, and what materials you need to craft it.
What Is the Rebreather in Subnautica 2?

The Rebreather is a diving tool that reduces oxygen consumption at depth. The deeper you dive in Subnautica 2, the faster your oxygen drains. Without the Rebreather, deep-water exploration becomes a constant race back to the surface.
To unlock the crafting blueprint, you only need to scan one Rebreather fragment. Multiple fragments are scattered across the world, so you are not locked to a single location.
Rebreather Fragment Locations

| Location | How to Find It |
|---|---|
| 320m South-Southeast of the Lifepod | Swim past the Welcome Center until you reach a rock formation with several pillars. This is also near the Chap Blackbox signal objective. Look for nearby debris and crates. The fragment is lying around in the area. |
| 300m South-Southwest of the Lifepod | A hidden Colonist Bunker. Scan the Rebreather fragment inside. |
| 300m North-Northwest of the Lifepod | Inside a crashed ship near an Angel Comb Adaptation. You need to craft the Sonic Resonator first to destroy the canker webbing and gain entry. |
| 430m Northeast of the Lifepod | Inside a massive wreck. Swim underneath to enter the cargo hold. Bring the Repair Tool to pry open the doorway. |
More Rebreather fragments can be found in the world, such as the platform outside the Research Station, and the cavern near the Ruby Blackbox signal. But since you only need to scan one, the four locations above are the most accessible.
All Black Box LocationsHow to Craft the Rebreather

Craft the Rebreather at a Fabricator. The table below lists all the materials you'll need.
| Item | Required Materials |
|---|---|
| Rebreather | Fiber Mesh x2 System Chip x1 |
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| Progression & Priorities | ||
|---|---|---|
![]() | Mid Game | Late Game |