Every Subnautica biome
Planet 4546B is split into surface, cave and deep biomes. Pick one to see its depth, what spawns there and what you can harvest.
37 entries
Surface
Safe Shallows
The starting biome where Lifepod 5 lands, mainly located near the centre of the map.
Kelp Forest
Creepvine forests with a green tint; there are five separate Kelp Forests in the Crater, the northern and western ones being the largest.
Grassy Plateaus
Four separate plateau areas where the seafloor is too deep for Creepvines, usually among the first biomes explored.
Northwestern Mushroom Forest
The larger of the two Mushroom Forests, dominated by a single Giant Tree Mushroom with caves in its stem.
Northeastern Mushroom Forest
The smaller Mushroom Forest, next to the front of the Aurora, packed with Tree Mushrooms and cliffs dropping into the Bulb Zone.
Bulb Zone
Biome of glowing Bulb Bushes bordering the Northeastern Mushroom Forest, Crash Zone, Mountains and Crater Edge.
Crash Zone
The easternmost and largest biome, where the Aurora crashed; murky brown water, debris, trenches behind the ship and mesas in the south.
Crash Zone Mesas
Six flora-covered plateaus in the southern Crash Zone near the Crag Field, standing out from the barren dunes around them..
Dunes
Vast sandy biome west of Lifepod 5 on the edge of the map.
Grand Reef
Deep biome covering a large part of the southern Crater, known for Anchor Pods and Membrain Trees.
Sparse Reef
Gloomy, sparsely populated biome south-west of Lifepod 5 with spire-like rock formations.
Sea Treader's Path
Migration path of the Sea Treader Leviathans south-west of Lifepod 5: a large sandy mound with a big tunnel through it.
Mountains
Vast, barren biome north-east of Lifepod 5 with deep underwater mountain ranges and hydrothermal vents.
Underwater Islands
Huge rock islands suspended above the seafloor, home to many Bonesharks and their own cave system.
Floating Island
Tropical island held up by Ancient Floaters, south-west of the Aurora, rising up to 85 m above sea level.
Mountain Island
Fog-shrouded island in the south-west corner of the Mountains, home of the Quarantine Enforcement Platform and the Principal Arch cache.
Northern Blood Kelp Zone
Dark, deep biome of giant Bloodvines north of Lifepod 5, between the Northwestern Mushroom Forest, Underwater Islands, Mountains and Dunes.
Blood Kelp Trench
Single deep trench south-west of Lifepod 5 with rock bridges and caves under the Bloodvines.
Crag Field
Rocky biome of large rock spikes between the Grand Reef, Crash Zone and Kelp Forest; the Crater Edge lies to its south and the Aurora's engines to its north.
Crater Edge (Void)
The empty, bottomless area surrounding the playable crater, which serves as the map border; the crater walls drop to about 1,120 m.
Caves
Jellyshroom Cave
Cave system below the Grassy Plateaus, Kelp Forest and Safe Shallows with four entrances.
Kelp Forest Caves
Cave systems at the deeper levels of the Kelp Forests; the Eye Stalk cave entrance is near Lifepod 3.
Mushroom Forest Caves
Two cave systems inside the Giant Tree Mushroom stem in the Northwestern forest, plus a large winding cave in the Northeastern forest cliff that links to the Bulb Zone Caves.
Safe Shallows Caves
Many small caves throughout the Safe Shallows, most too small for a Seamoth.
Grassy Plateaus Caves
Caves under the Grassy Plateaus where 8 of the 14 Sea Crowns grow (in three of the caves).
Sea Treader's Tunnel Caves
Cave network inside the Sea Treader's Path tunnel, entered from the tunnel walls or from the top.
Underwater Islands Caves
Caves inside the larger Underwater Islands with upside-down Coral Shell Plates, Rubies and Cave Crawlers.
Mountains Caves
Large caves inside the mountain ranges, including the Mountain Island caves (Shale Outcrops, Eye Stalks) and deeper caves with Ruby, Uraninite, Magnetite and a few thermal vents..
Bulb Zone Caves
Volcanic caves under the Bulb Zone with small lava rifts on the walls; one links to the Mushroom Forest Caves and another, under Wreck 3, leads to a Cuddlefish Egg..
Grand Reef Caves
Narrow caves in the Grand Reef with few resources, though Ruby and Uraninite are easier to find than outside.
Dunes Caves
Three caves inside the Dunes giant sinkhole around its thermal vents, holding 4 of the 14 Sea Crowns.
Blood Kelp Caves
Caves beneath the Bloodvines of both Blood Kelp Zones.
Deep
Deep Grand Reef
Large cave system beneath the Grand Reef reached through cracks in its floor, with many hydrothermal vents.
Deep Sparse Reef
Trenches and caves beneath the Sparse Reef, south-west of Lifepod 5, with an entrance to the Blood Kelp Trench.
Lost River
Huge, frigid cave biome deep under the surface, split into sub-areas: Bone Fields, Corridor, Ghost Canyon, Ghost Forest, Tree Cove, Junction and Mountains Corridor.
Inactive Lava Zone
Volcanic cave biome reached from the Lost River Tree Cove (via the ILZ Corridor) and the Mountains Corridor pit.
Lava Lakes
The deepest biome (1300+ m) and the hottest, reached through two pits in the Inactive Lava Zone.