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Biome matrix · fan-made / unofficial

Subnautica 2 biomes map guide

Short answer: use the biome matrix to decide where to search next, but only Shallows is promoted as a full indexable biome dossier today. Other biome entries remain map-first until they have enough source depth.

Open Shallows dossierSearch Shallows on map
Biome cards

Indexable biome first, map-only entries second

map-only signal

source-location-specific

26 markers · source: Game8 All Black Box Locations · confidence: public_reference · last_updated: 2026-05-20

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indexable dossier

Shallows

7 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Plateaus

5 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Tufa Towers

5 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Graveyard

4 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

unknown

4 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Leadzone

2 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Power Plant

2 markers · source: Game8 Quartz guide · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Observatory

2 markers · source: Game8 Silver guide · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Anemone Hills

1 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Blighted Coral

1 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

South Raceway

1 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

North Raceway

1 markers · source: Game8 List of Biomes / Interactive Map · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

Shallows / early cave network

1 markers · source: Eurogamer Silver guide · confidence: public_reference · last_updated: 2026-05-20

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map-only signal

early cave network

1 markers · source: Eurogamer Silver guide · confidence: public_reference · last_updated: 2026-05-20

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FAQ

Biome guide questions

Which Subnautica 2 biome should I start with?

Start with Shallows because it has enough early resource and POI context for a useful player task page.

Why are not all biomes full pages?

Thin biome entries stay inside the interactive map until they have enough source-backed markers, confidence, and route value.

Are these official biome maps?

No. They are fan-made public-reference dossiers with no official endorsement.