SUBNAUTICA / BIOMES

Jellyshroom Caves

A cave network with giant purple mushrooms, Crabsnakes and a Degasi location.

QUICK REFERENCEFirst SubnauticaReviewed 2026-10-28Reference / noindex

OVERVIEW

Understanding Jellyshroom Caves

A cave network with giant purple mushrooms, Crabsnakes and a Degasi location.

This is an original reference for the first Subnautica. Your current depth rating, oxygen, available tools and navigation route determine when an objective is practical. Follow actual in-game PDA and Fabricator information for any values that vary by version.

PRACTICAL APPROACH

How to use this information

Bring a reliable light, a safe exit route and a vehicle or oxygen capacity suited to the depth.

COMMON MISTAKES

What to avoid

Attempting the cave with a starter oxygen tank and no beacon often causes disorientation.

CONTINUE ON VOLPEDIA

Related topics and walkthroughs

CREATURESCrabsnake

A predator associated with the Jellyshroom Caves' giant mushrooms.

BIOMESUnderwater Islands

A biome of suspended islands, caves and varied wreck exploration opportunities.

GUIDESBiomes And Safe Navigation

Navigate Subnautica from the shallows to the deep caves

TIPSBe Careful in Degasi Caves

Abandoned habitats are valuable but often sit in hazardous places.

EXPLORATIONCave Navigation

Tight, dark caves create orientation and oxygen risks.

WRECKSDegasi Seabase — Jellyshroom Cave

The abandoned underground habitat in the purple-mushroom cave system.

EQUIPMENTFlashlight

A battery-powered light useful when exploring dark wrecks and caves.

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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.