SUBNAUTICA / MAPS & BIOMES
Maps & Biomes
Safe Shallows through Lost River and the volcanic deep.
21 entries · Reviewed 2026-10-28
ORIGINAL SUBNAUTICA ENCYCLOPEDIA
Maps & Biomes reference library
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21 of 21 entries
BIOMES · REFERENCE
Safe Shallows
The low-risk starting biome with coral, limestone outcrops and many survival basics.
BIOMES · REFERENCE
Kelp Forest
A green biome of creepvine, metal salvage and Stalkers close to the starting area.
BIOMES · REFERENCE
Grassy Plateaus
Broad red-grass areas with scattered wreckage and fragments for early equipment.
BIOMES · REFERENCE
Mushroom Forest
Towering mushroom-tree biomes used for exploration and certain valuable fragments.
BIOMES · REFERENCE
Jellyshroom Caves
A cave network with giant purple mushrooms, Crabsnakes and a Degasi location.
BIOMES · REFERENCE
Floating Island
An above-water island with abandoned Degasi structures and growable plants.
BIOMES · REFERENCE
Mountain Island
An island tied to the alien-installation storyline.
BIOMES · REFERENCE
Grand Reef
A deep blue biome with floating anchor pods, advanced resources and dangerous creatures.
BIOMES · REFERENCE
Sparse Reef
A relatively open biome that can serve as a passage toward deeper regions.
BIOMES · REFERENCE
Blood Kelp Zone
A dark biome with white bloodvine and connections toward Lost River.
BIOMES · REFERENCE
Blood Kelp Trench
A narrow deeper bloodvine region offering one possible route toward advanced zones.
BIOMES · REFERENCE
Bulb Zone
A northeastern biome with bulbous blue plants and several hostile animals.
BIOMES · REFERENCE
Crash Zone
The wrecked Aurora region, containing dangerous terrain, debris and Reaper patrols.
BIOMES · REFERENCE
Dunes
An open sandy biome associated with Reapers and scattered resources.
BIOMES · REFERENCE
Mountains
Rocky biome near the island, notable for challenging predator encounters.
BIOMES · REFERENCE
Underwater Islands
A biome of suspended islands, caves and varied wreck exploration opportunities.
BIOMES · REFERENCE
Sea Treader's Path
A southeastern deep route along which Sea Treaders traverse the seabed.
BIOMES · REFERENCE
Lost River
An interconnected deep cave ecosystem with brine pools, fossils and alien-story routes.
BIOMES · REFERENCE
Inactive Lava Zone
A deeper volcanic region reached beyond Lost River, important for final progression.
BIOMES · REFERENCE
Lava Lakes
One of the deepest volcanic areas, connected to major story discoveries.
BIOMES · REFERENCE
Crater Edge
The ecological dead zone beyond the playable crater, patrolled by adult Ghost Leviathans.
Independent Volpedia editorial encyclopedia about the first Subnautica, reviewed 2026-10-28. Unaffiliated with Unknown Worlds Entertainment. Category illustrations are original diagrams, not in-game maps, screenshots or exact creature portraits. No fabricated damage statistics, spawn probabilities or detailed map coordinates. References are documented privately and not shown as outbound research buttons.