Subnautica 2's ocean world is divided into distinct biomes, each with unique flora, fauna, resources, and hazards. Understanding each biome is essential for efficient resource gathering and safe exploration. This guide covers all biomes currently available in Early Access.
Safe Shallows Safe
Your starting location and the safest biome in the game. The Safe Shallows contain basic resources like quartz, titanium, and copper ore. Common creatures include peepers, bladderfish, and garryfish. No hostile creatures inhabit this area, making it perfect for early game resource gathering.
Key Resources: Quartz, Titanium, Copper Ore, Salt Deposits, Acid Mushrooms
Notable Creatures: Peeper, Bladderfish, Garryfish, Hoverfish, Hoopfish
Kelp Forest Caution
Towering creep vines dominate this biome, creating a dense forest environment. Stalkers patrol the area and will attack if provoked, but they can be distracted with metal salvage. Silver ore and creepvine seed clusters are abundant here.
Key Resources: Silver Ore, Creepvine Seed Cluster, Creepvine Sample, Metal Salvage
Notable Creatures: Stalker (hostile), Peeper, Hoopfish, Airsack
Grassy Plateaus Safe
Vast red grass plains dotted with sandstone and shale outcrops. This biome is excellent for mid-game resource farming, offering gold, lithium, and diamond. The open spaces make navigation easy, and hostile creatures are rare.
Key Resources: Gold, Lithium, Diamond, Lead, Sandstone Outcrop
Notable Creatures: Sand Shark (semi-hostile), Peeper, Hoopfish, Rabbit Ray
Twisty Bridges Caution
Unique geological formations create natural bridges and tunnels. Ruby and gel sacks are found here, essential for advanced crafting. Ghost rays float through the deeper sections, and bone sharks patrol the area.
Key Resources: Ruby, Gel Sack, Magnetite, Uraninite Crystal
Notable Creatures: Bone Shark (hostile), Ghost Ray, Crabsquid (deep areas)
Deep Grand Reef Danger
A dark, expansive biome with massive floating island-like structures. Nickel ore and kyanite are critical endgame resources found here. Warpers are aggressive and will teleport you out of your vehicle, making exploration dangerous without proper preparation.
Key Resources: Nickel Ore, Kyanite, Crystalline Sulfur, Aluminum Oxide Crystal
Notable Creatures: Warper (hostile), Ghostray, Crab Squid, Ampeel
Lost River Danger
An ancient fossilized biome with green brine pools that damage unprotected players. Ghost Leviathans patrol the entrances, making this one of the most dangerous areas in the game. However, it contains essential story locations and precursor structures.
Key Resources: Nickel Ore, Sulfur, Ancient Bones, Alien Tablets
Notable Creatures: Ghost Leviathan (leviathan class), River Prowler, Crabsquid
Lava Zones Extreme Danger
The deepest and most dangerous biome. Extreme heat requires thermal protection suits. Sea Dragon Leviathans roam these areas, and lava geysers create constant environmental hazards. Essential for endgame progression and ion cube crafting.
Key Resources: Ion Cubes, Kyanite, Sulfur, Crystalline Sulfur
Notable Creatures: Sea Dragon Leviathan (leviathan class), Lava Lizard, Warper