Biomes (Subnautica)

Subnautica features a wide range of Biomes to explore and conquer, representing miniature ecosystems. The word itself comes from the term "bio", meaning life.

Biomes

Surface Biomes

• Blood Kelp Zone (150m - 675m)
• Crash Zone (0m - 300m)
• Dunes (65m - 400m)
• Floater Island (Surface)
• Grand Reef (180m - 450m)
• Grassy Plateaus (50m - 170m)
• Kelp Forest (1m - 160m)
• Koosh Zone (140m - 480m)
• Mountain Island (Surface)
• Mountains (0m - 500m)
• Mushroom Forest (75m - 250m)
• Safe Shallows (1m - 80m)
• Sea Treader's Path (170m - 360m)
• Sparse Reef (40m - 310m)
• Underwater Islands (35m - 500m)

Cave Biomes

• Blood Kelp Caves (430m - 675m)
• Deep Grand Reef (425m - 600m)
• Jelly Shroom Caves (180m - 300m)
• Kelp Forest Caves (90m - 170m)
• Lava Caves (220m - 315m)
• Mountain Range Caves (0m - 380m)
• Mushroom Forest Caves (170m - 250m)
• Overgrown Caves (125m - 200m)
• Safe Shallows Caves (10m - 75m)
• Sea Treader's Tunnel Caves (200m - 340m)
• Tiger Plant Caves (120m - 175m)

In-Development Biomes

• Inactive Lava Zone (600m - 1500m)
• Lost River (700m - 800m)

Mini-Biomes

• Lava Geyser (variable depth)

Possible Biomes

• Arctic
• Twisty Bridges

Gallery

• 

  Arctic biome's reference sheet, made by the developers

• 

  Early development biome's reference sheet

• 

  Lost River's early map, with the Sea Treader's Path encircled in red

• 

  Colorblind-friendly biome map

• 

  Biome-map as of build 31835

Trivia

• Developers' footages of biome generation can be seen on a playlist from Russel Maekim's Youtube channel. He also sometimes livestreams his work on Twitch.

• The game considers the inside of an Observatory and Scanner Room to be separate biomes. This is also true for the Aurora and the wreck in the Koosh Zone (respectively labelled crashedShip and wreck).