This article is about the Biomes in Subnautica. To see this subject's article on the Below Zero Wiki, click here.
Spoiler.png Read at own risk

This article contains unmarked spoilers. Players new to the game would want to avoid or be cautious toward this article.


Subnautica features a wide range of Biomes to explore and exploit. They all represent miniature ecosystems from the real world.

There is a huge variety 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
BloodKelpZoneNorthTrue.png
Blood Kelp Zone
  • 150 - 675 meters (Trench)
  • 200 - 580 meters (Northern)
BulbZoneTrue.png
Bulb Zone
  • 140 - 480 meters
Crag Field Biome.png
Crag Field
  • 125 - 460 meters
CrashZoneTrue.png
Crash Zone
  • 0 - 370 meters
Void GL.png
Crater Edge
  • 0 - 8000 meters

N/A

N/A

Dunes Biome.png
Dunes
  • 65 - 400 meters
Grand Reef Biome.png
Grand Reef
  • 150 - 480 meters
Grassy Plateaus Biome.png
Grassy Plateaus
  • 50 - 170 meters
KelpForestTrue.png
Kelp Forest
  • 0 - 160 meters
Mountains Biome.png
Mountains
  • 0 - 500 meters
MushroomEastTrue.png
Mushroom Forest
  • 75 - 250 meters (Northwestern)
  • 125 - 200 meters (Northeastern)
SafeShallowsTrue.png
Safe Shallows
  • 0 - 80 meters
STPTrue.png
Sea Treader's Path
  • 170 - 360 meters
Sparse Reef Biome.png
Sparse Reef
  • 40 - 310 meters
UnderIslandsInfobox.png
Underwater Islands
  • 35 - 500 meters

Islands

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

N/A

MountainIslandHeaderImage.png
Mountain Island
  • Above sea level

Cave Biomes

Biome Depth Range Harvesting Nodes Points of Interest
BloodKelpCavesInfoboxTrue.png
Blood Kelp Caves
  • 285 - 675 meters
    N/A
Lost RIverCavesInfobox.png
Bone Fields Caves
  • 610 - 710 meters

N/A

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

N/A

GR Caves Infobox.png
Grand Reef Caves
  • 120 - 410 meters

N/A

GrassyPlateausCavesInfoboxTrue.png
Grassy Plateaus Caves
  • 120 - 175 meters

N/A

Lava 9.gif
Inactive Lava Zone
  • 900 - 1300 meters
2016-02-07 00009.jpg
Jellyshroom Cave
  • 180 - 300 meters
KelpForestCavesInfobox.png
Kelp Forest Caves
  • 90 - 170 meters
      N/A
ALZ1.jpg
Lava Lakes
  • 1300 - 1500 meters
N/A
Lost RIver Infobox PIc.png
Lost River
  • 550 - 1000 meters
20170424174843 1.jpg
Mountains Caves
  • 0 - 380 meters
2016-02-11 00031.jpg
Mushroom Forest Caves
  • 170 - 250 meters

N/A

SAFECAVES3.png
Safe Shallows Caves
  • 10 - 75 meters

N/A

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

N/A

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

N/A

Mini-Biomes

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

N/A

LavaGeyserInfobox.png
Lava Geyser
  • 60 - 560 meters
  • Varies

N/A

LavaCastle2.jpg
Lava Castle
  • 1100 - 1300 meters
N/A
Infobox ILZC.png
Inactive Lava Zone Corridor
  • 800 - 1200 meters
         N/A

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, Scanner Room, Alien Containment, and inside the aquarium in the Primary Containment Facility to be completely 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 Islands.
  • Early lava zone biome concepts were divided into Lava Zone, Lava Bridges, Inactive Lava Zones, and Thermal Vents.
  • The Lava Lakes and the Crater Edge are the only biomes that do not contain any Flora.
Community content is available under CC-BY-SA unless otherwise noted.