All Biomes Guide - Every Location Explained
Updated 2026-08-06 - 12 min read
A World Under the Waves
Subnautica 2 features a huge ocean with dozens of distinct biomes, each with unique flora, fauna, resources, and challenges.
This guide covers every major biome so you know exactly where to go for whatever you need.
Shallow Biomes (0-200m)
The Shallows / Safe Shallows
The starting area. Bright, colorful, and mostly safe. Perfect for new players.
- Resources: Titanium, copper, acid mushrooms, creepvine
- Creatures: Peepers, Bladderfish, Stalkers (mildly dangerous)
- Danger level: Very Low
Kelp Forest / Creepvine Zone
Dense underwater forests. Beautiful but easy to get lost in.
- Resources: Creepvine samples, seeds, quartz
- Creatures: Stalkers, lots of small fish
- Danger level: Low-Medium
Grassy Plateaus
Wide open sandy plains with lots of wrecks and resources.
- Resources: Sandstone, gold, silver, wrecks with fragments
- Creatures: Sandsharks, Bonesharks
- Danger level: Medium
Mid-Depth Biomes (200-500m)
Mushroom Forest
One of the most iconic biomes. Giant mushroom trees, colorful coral, and lots of wrecks.
- Resources: Lithium, large deposits, many fragments
- Creatures: Jellyrays, Ampeels (dangerous)
- Danger level: Medium-High
Underwater Islands / Floating Islands
Massive floating rock formations covered in life. Very unique biome.
- Resources: Rare flora, surface access on top of islands
- Creatures: Various, including some predators
- Danger level: Medium
Jellyshroom Cave
A vast cave system full of glowing jellyshrooms. Great for exploration but easy to get lost.
- Resources: Magnetite, quartz, cave sulfur
- Creatures: Crabsnakes
- Danger level: Medium
Deep Biomes (500-1000m)
Lost River
A massive underground river system. One of the most atmospheric areas in the game.
- Resources: Nickel, sulfur, crystalline sulfur
- Creatures: Ghost Leviathans, River Prowlers
- Danger level: High
Deep Grand Reef
Darker, deeper version of the reef biome with more dangerous creatures.
- Resources: Kyanite (deep areas), diamonds
- Creatures: Crabsquids, Warpers
- Danger level: High
Inactive Lava Zone
Volcanic caves deep underground. Hot, dangerous, and full of rare resources.
- Resources: Kyanite, magma ore, thermal vents
- Creatures: Lava Lizards, Sea Dragon Leviathans (deeper areas)
- Danger level: Very High
Endgame Biomes (1000m+)
Active Lava Zone
The deepest biome in the game. Molten magma, massive heat, and the most dangerous creatures.
- Resources: Kyanite, Ion crystals, Alien artifacts
- Creatures: Sea Dragon Leviathans, Lava Larvae
- Danger level: Extreme
Alien Bases / Primary Containment Facility
Not a traditional biome, but the endgame location. Massive alien structure deep underground.
- Resources: Alien technology, Ion cubes
- Creatures: The Sea Emperor (story-related)
- Danger level: Story-dependent
Quick Resource Reference
Looking for a specific resource? Here is where to find everything:
| Resource | Biome(s) |
|---|---|
| Titanium | All shallow biomes |
| Copper | Shallows, Kelp Forest |
| Silver | Grassy Plateaus, caves |
| Gold | Grassy Plateaus, deeper biomes |
| Lithium | Mushroom Forest, deep areas |
| Diamond | Deep biomes, Lost River |
| Nickel | Lost River, Lava Zones |
| Kyanite | Deep Grand Reef, Lava Zones |