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The conditions in this cave support a microcosm of unique, possibly predatory lifeforms. Try to anticipate unanticipated threats.

― PDA, Dialogue

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The Jellyshroom Cave is a cave system found below the Grassy Plateaus, Kelp Forest, and Safe Shallows.

Four entrances can be found at coordinates: (130 -95 -390), (-360 -110 -225), (-495 -90 15), and (-725 -105 0).

The area is explorable via the Seamoth, but it is dangerous to do so without a Seamoth Depth Module MK1 or higher due to the biome's depth. The Seamoth Perimeter Defense System upgrade is also advisable, but not needed, due to the Crabsnakes’ tendency to ambush the player from the Jellyshrooms themselves.

Exploring the caves with the Prawn Suit is possible but challenging without the Grappling Arm and/or Jump Jet Upgrade to get back out of the caves.

Description

The Jellyshroom Cave is a large cavern characterized by a dense population of huge, translucent, purple Jellyshrooms, along with structures such as stalactites and stalagmites.

The cave system has two predatory species and two prey species. The most notable of these are the Crabsnakes residing in the Jellyshrooms, and the Oculus, both of which are found only in this biome.

Shale Outcrops and Magnetite can be found here, as well as various Large Resource Deposits.


Spoiler alert: The following section contains story related material.


The second Degasi seabase can be found here. The entrance at 140, -86, -397 is right above the Degasi Seabases.


Data Bank Entry

Environment Log

User 'Paul Torgal' requested cross-referencing of local environment scans with ideal habitat construction conditions. Displaying results.

- Large subterranean cavern with multiple entrances
- Conditions support a unique microcosm of predatory lifeforms
- Minor structural instability in cave walls
- Extensive resource deposits

Average Environment Safety Rating: C
Optimal Habitat Site Safety Rating: B

Site 7 has been selected as the optimal habitat construction site for the following reasons:

- Close proximity to one of the cave entrances, in case of emergency
- Medium distance from predatory organisms
- Stable foundations on which to build
- Ready access to materials

A signal tracking the site has been created.

Gallery

Trivia

  • The abundance of Stalactites suggests that these caverns were dry-standing for several million years, only later being flooded presumably when the ceiling collapsed due to erosion - this might explain why its native ecosystem is so uniquely different from all bordering biomes.
  • The ambience noise is the same as the Blood Kelp Zones.
  • The Jellyshroom Cave is the only biome to feature Large Magnetite Deposits in the game.
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