Subnautica 2 Biomes
Subnautica 2 is set in the new Ariadne Arm system. Two depth-tier biomes have detail pages so far. Sub1 baseline biomes below for reference — most return in some form per the Unknown Worlds dev-vlog series.
Detail pages built
BIO.01
Lost River
500–1,000 m · 5 entrances · Ghost Leviathan juvenile · gateway to Lava Zone.
BIO.02
Lava Zone
1,000–1,700 m · Sea Dragon Leviathan · Kyanite mining · endgame depth tier.
Sub1 reference biomes (Sub2 status TBD May 14)
- Safe Shallows 0–80 m Starter biome · Peeper / Bladderfish / Cuddlefish eggs
- Kelp Forest 60–150 m Stalker territory · sandstone + copper ore
- Grassy Plateaus 60–150 m Sand Shark · Reefback · scrap metal field
- Mountains 50–250 m Reaper Leviathan patrol zone · large wrecks
- Bulb Zone 150–300 m Bioluminescent · Lost River entrance
- Mushroom Forest 125–250 m Crabsnake · giant mushroom canopy
- Blood Kelp Zone 300–500 m Crabsquid · brine pools · lithium
- Grand Reef 300–500 m Ghost Leviathan adult · deep wrecks
- Crash Zone 0–250 m Aurora wreck · Reaper Leviathan dense spawn
- Dunes 50–250 m Reaper Leviathan open-water spawn · no cover
- Sparse Reef 0–250 m Crashfish · few large fauna
- Mountain Island 0–150 m Dry land · alien base · Stalker spawns