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Subnautica features a wide range of Biomes to explore and coexist with, which represent miniature ecosystems from the real world.

There is a very diverse range of Biomes, from the vibrant Kelp Forest to the sizzling depths of the enigmatic Lava Lakes. Each Biome contains its own set of Flora and Fauna to discover and resources to harvest. 

Biomes

Surface Biomes

Biome Depth Range Harvesting Nodes Points of Interest
BKZT Infobox
Blood Kelp Zone
  • 150 - 675 meters (Trench)
  • 200 - 580 meters (Northern)
KooshZoneInfobox
Bulb Zone
  • 140 - 480 meters
Crag Field Updated 1
Crag Field
  • 125 - 460 meters
Crash Zone Biome
Crash Zone
  • 0 - 370 meters
Void Infobox
Dead Zone
  • 0 - 3000 meters

None

None

Dunes Infobox
Dunes
  • 65 - 400 meters
GR Infobox
Grand Reef
  • 150 - 480 meters
Grassy Plateaus
Grassy Plateaus
  • 50 - 170 meters
Kelp Forest Infobox
Kelp Forest
  • 0 - 160 meters
Mountains 1
Mountains
  • 0 - 500 meters
NWMF Infobox
Mushroom Forest
  • 75 - 250 meters (Northwestern)
  • 125 - 200 meters (Northeastern)
SafeShallowsInfoboxTrue
Safe Shallows
  • 0 - 80 meters
STP Infobox
Sea Treader's Path
  • 170 - 360 meters
Sparse polish 02
Sparse Reef
  • 40 - 310 meters
UnderIslandsInfobox
Underwater Islands
  • 35 - 500 meters

Islands

Biome Depth Range Harvesting Nodes Points of Interest
FloatingIsland1
Floating Island
  • Above sea level

-

MIBiomes
Mountain Island
  • Above sea level

Cave Biomes

Biome Depth Range Harvesting Nodes Points of Interest
BloodKelpCavesInfoboxTrue
Blood Kelp Caves
  • 430 - 675 meters
-
Lost RIverCavesInfobox
Bone Fields Caves
  • 610 - 710 meters

-

-
BulbZonecavesinfobox
Bulb Zone Caves
  • 220 - 315 meters
DeepGradnInfoboxTrue
Deep Grand Reef
  • 425 - 630 meters
DeepSparse
Deep Sparse Reef
  • 210 - 290 meters
DunesCavesInfoboxImage
Dunes Caves
  • 400 - 420 meters

-

GR Caves Infobox
Grand Reef Caves
  • 350 - 410 meters

-

GrassyPlateausCavesInfoboxTrue
Grassy Plateaus Caves
  • 120 - 175 meters

-

Lava 9
Inactive Lava Zone
  • 900 - 1300 meters
2016-02-07 00009
Jellyshroom Cave
  • 180 - 300 meters
KelpForestCavesInfobox
Kelp Forest Caves
  • 90 - 170 meters
-
ALZ1
Lava Lakes
  • 1300 - 1700 meters
Lost RIver Infobox PIc
Lost River
  • 550 - 1000 meters

-

20170424174843 1
Mountain Range Caves
  • 0 - 380 meters
  • Thermal Vents (?)
2016-02-11 00031
Mushroom Forest Caves
  • 170 - 250 meters

-

SAFECAVES3
Safe Shallows Caves
  • 10 - 75 meters

-

2016-02-08 00003
Sea Treader's Tunnel Caves
  • 200 - 340 meters

-

Screen Shot 2017-03-02 at 17.20.59
Underwater Islands Caves
  • 205 - 255 meters

-

Mini-Biomes

Biome Depth Range Harvesting Nodes Points of Interest
CZMesasInfobox
Crash Zone Mesas
  • 150 - 330 meters

-

LavaGeyserInfobox
Lava Geyser
  • 60 - 560 meters

-

LavaCastle2
Lava Castle
  • 1100 - 1300 meters
Infobox ILZC
Inactive Lava Zone Corridor
  • 800 - 1200 meters
-

Possible Expansion Pack Biomes

Biome Depth Range Harvesting Nodes Points of Interest
BiosphereSheet Arctic page01
Arctic Biome

Unknown

Unknown

Unknown

LilypadWaterIslands LowRes
Lilypad Islands

Unknown

Unknown

Unknown

TwistyBridges01
Twisty Bridges

Unknown

Unknown

Unknown

Gallery

Trivia

  • Early development footages of biome generation can be seen on a playlist from Russel Maekim's YouTube channel.
  • The game considers the inside of an Observatory, Lifepod, and Scanner Room to be separate biomes.
  • Early surface biome concepts were divided into Kelp Forest, Dense Kelp Forest, Sunny Kelp Forest, Coral Reef, Danger Reef, Safe Shallows, Grand Reefs, and Floating Island.
  • Early lava zone biome concepts were divided into Lava Zone, Lava Bridges, Inactive Lava Zones and Thermal Vents.

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