Subnautica 2 Biomes — Complete Biome Guide, Resources & Creatures by Zone

Subnautica 2 biomes are more diverse and interconnected than in the original game, with seamless transitions between zones and unique visual identities for each region. This Subnautica 2 biomes guide covers all six biomes available in the Early Access build, detailing the Subnautica 2 biomes resource distribution, creature populations, depth ranges, and base-building suitability for each zone. Understanding Subnautica 2 biomes is the key to efficient resource gathering and safe navigation. Whether you are looking for the safest Subnautica 2 biomes for a starter base or the richest Subnautica 2 biomes for endgame materials, this guide maps it all.

Shallow biomes (0–200 m)

The shallow Subnautica 2 biomes are the safest and most accessible. The Safe Shallows (0–80 m) is the starting biome with abundant titanium scrap, quartz, limestone outcrops, and passive creatures like Peepers and Bladderfish. The Kelp Caves (30–150 m) connect the Safe Shallows to deeper zones and feature creepvine clusters, Stalker populations, and Crashfish nests in cave pockets. The Grass Plateaus (50–200 m) are open sandy plains with sandstone outcrops (gold, silver, lead), large titanium deposits, and Sand Shark patrols. These shallow Subnautica 2 biomes are ideal for first bases, with reliable solar power and low creature threat. The transition between Safe Shallows and Kelp Caves is the most traveled corridor in Subnautica 2 biomes and is where most early-game players should establish their first outpost. Each of these shallow Subnautica 2 biomes connects to at least two others, giving you multiple routes between zones.

Mid and deep biomes (200–900 m+)

The mid-depth Subnautica 2 biomes introduce higher threats and better resources. The Thermal Spires (120–350 m) are volcanic pillars with thermal vents that provide free power, along with magnetite, lithium, and uraninite deposits. The Jellyshroom Caves (250–500 m) are a cave system beneath the Grass Plateaus filled with giant bioluminescent flora, rich in magnetite and lithium but patrolled by the Serpent Leviathan. The Deep Zone (400–900+ m) is the deepest accessible Subnautica 2 biome in Early Access, featuring thermal vents, kyanite deposits, nickel ore, and the Ghost Leviathan. Among the Subnautica 2 biomes, the Deep Zone offers the greatest resource density but also the highest creature threat. The upcoming biomes on the roadmap — Floating Islands, Crystal Caverns, Lava Corridors, Abyssal Trench — will expand the Subnautica 2 biomes count to approximately 15 by 1.0 release. Thermal Spires is widely considered the best base location among Subnautica 2 biomes for mid-game players due to its combination of power options, resource variety, and central map position.

Navigating between biomes

Navigation between Subnautica 2 biomes relies on natural corridor connections. From the Safe Shallows, descend through the Kelp Caves into the Jellyshroom Caves entrance. From the Grass Plateaus, the thermal spires rise at the southern edge leading to the Thermal Spires biome. The Deep Zone entrance is a large trench on the eastern edge of Thermal Spires — look for the thermal current that pulls downward. As you explore Subnautica 2 biomes, place Beacons at biome transitions to create a mental map. The compass (crafted from copper ore and quartz) is essential for navigating Subnautica 2 biomes, especially in the Jellyshroom Caves and Deep Zone where cave ceilings block surface light. Understanding the vertical layering of Subnautica 2 biomes helps with depth management: the transition from Safe Shallows (0 m) through Kelp Caves (80 m) to Jellyshroom Caves (250 m) is a natural progression that builds player confidence before reaching the more dangerous Subnautica 2 biomes.