Subnautica 2 Confirmed Biomes: Full List by Region
Every confirmed Subnautica 2 Early Access biome by region, what's still unconfirmed (Great Trench, Xanadu), and why 'Far Far West' is unrelated.
Subnautica 2 Early Access now has 13 confirmed, live biomes across four regions, plus two named areas that are planned but not yet reachable. This page started as a pre-launch “biome watchlist” built from trailer footage and community guesswork; two months into Early Access, the real roster is documented and stable enough to publish as a list instead of a guess. Use it as the index — each region links out to the dedicated guide with depth, resources and threats.
The confirmed roster, by region
Coral Gardens Region — the starting region, mostly shallow to mid-depth:
| Biome | Depth | What it’s for |
|---|---|---|
| Shallows | 0-224m | First base, early crafting materials |
| Dolerite Spires | 0-128m | Rocky spire maze; Great Jaw territory, wrecks |
| Graveyard | Deeper mid-water | Tailings Village, Tadpole Pens, Gold/Sulfur |
| Lead Zone | Shallow-mid | Sparse fauna, Lead-heavy deposits |
| Necrolei Hills | Mid-depth | Primary Necrolei Cyst source for crafting |
| North Raceway | Shallow | Open terrain, Tadpole route |
| Plateaus | Mid-depth | Uneven terrain, Deepwing Egg Clumps |
| South Raceway | 0-85m | Open terrain near Dolerite Spires |
Sparse Plains Region — one confirmed biome:
| Biome | Depth | What it’s for |
|---|---|---|
| Sparse Plains | 0-250m | Open low-cover water, active Collector Leviathan patrol lane |
Karakorum Ruins Region — the mid/late-game gear-gated cluster:
| Biome | Depth | What it’s for |
|---|---|---|
| Karakorum Metal Farms | 0-500m | Axum Bacterial Culture, guarded by two Collector Leviathans |
| Overgrown Ruins | 0-600m | Axum Observatory, Rosetta Stone, alien lore |
| Root Canyon | 364-750m | Rare metals (Celestine, Atacamite, Gold, Silver) |
Deepest confirmed zone:
| Biome | Depth | What it’s for |
|---|---|---|
| The Void | 0-3,100m | No confirmed resource table; Shiver Leviathan; current world edge |
For threat rankings across all of these, see the danger zones hazard map; for a resource-first view of the same 13 biomes, see the resource map by biome cluster.
What’s still unconfirmed
Two named areas show up in datamines and developer commentary but are not reachable in the live build:
- Xanadu — home to the passive Titan-class “World Tree” and the “Alien Crypt.” Covered in full, with the honest confirmed/unconfirmed split, in the Void biome guide.
- Great Trench — referenced as a planned future biome with no published depth range, resource table or access route yet.
Treat both as roadmap direction, not current content. Unknown Worlds’ own roadmap places new regions and creatures under a later, undated Early Access update — see the roadmap tracker for what’s actually been confirmed versus what’s still a bucket label.
What about ‘Far Far West’?
If you searched “Far Far West Subnautica 2” and landed here, you’re not missing a biome — there is no biome called Far Far West in Subnautica 2.
Far Far West is a separate co-op shooter that launched around the same window as Subnautica 2, and a wave of low-quality “biome reveal” posts and joking Reddit captions cross-contaminated search results during launch week. Subnautica 2’s real biome list is entirely above.
For the full game comparison, see Subnautica 2 vs Subnautica 1.
Biome FAQ
How many biomes are in Subnautica 2 right now? 13 confirmed, live biomes across four regions (Coral Gardens, Sparse Plains, Karakorum Ruins, and the standalone Void), per the current Early Access build. Two more named areas — Xanadu and the Great Trench — are planned but not yet reachable.
Which biome should I explore first? Start in the Shallows, then push into the rest of the Coral Gardens Region (Dolerite Spires, Graveyard, Plateaus and the two Raceways) before you need a Depth Module for Karakorum Ruins.
Is Xanadu the same as Overgrown Ruins? No. Overgrown Ruins is a confirmed, reachable biome inside the Karakorum Ruins Region. Xanadu is a separate, unreached area referenced in datamines and roadmap commentary, home to the World Tree.
Will more biomes be added during Early Access? Yes — Unknown Worlds has said Early Access will keep adding biomes, creatures and world content over its multi-year window. Check the roadmap tracker before treating any new name as live.
Sources: Unknown Worlds’ Subnautica 2 wiki biome index, the dedicated biome guides linked above, and this site’s own confirmed-vs-leaked map data.