
The Mushroom Forest Caves in Subnautica are a small cave system with life forms and coral structures typical of the Mushroom Forest. The entrance to this cave system is located embedded into a cliff, facing the Bulb Zone, below the largest Tree Mushroom. The caves are particularly large and are made up of long, winding tunnels that lead to and from a large central cave found inside. The first cave contains an entrance at the top and bottom of the Giant Tree Mushroom, with the upper part being populated by Spadefish. The bottom entrance is facing Northwest, near a Brain Coral, and the upper entrance is facing Southeast.
| Characteristics | Values |
|---|---|
| Name | Mushroom Forest Caves |
| Game | Subnautica |
| Description | A small cave system with life forms and coral structures typical of the Mushroom Forest. |
| Distinct Features | Bioluminescent plants, Grue Clusters, Cuddlefish eggs, Giant Tree Mushroom |
| Connecting Areas | Bulb Zone Caves, Cliff facing the Bulb Zone, Giant Tree Mushroom |
| Entrance Locations | Northwest of Brain Coral, Southeast of Giant Tree Mushroom, Below the largest Tree Mushroom |
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What You'll Learn

The Mushroom Forest Caves are a small cave system
The Mushroom Forest Caves feature two Cuddlefish eggs, which can be found in chambers close to the entrance of the cave. The first cave contains an entrance at the top and bottom of the Giant Tree Mushroom. The bottom entrance faces northwest, near a Brain Coral, while the upper entrance faces southeast and is populated by Spadefish. A second, smaller cave can be found at the base of the Giant Tree Mushroom, towards the east.
The Mushroom Forest Caves are not to be confused with the Jellyshroom Caves, which are also located in Subnautica. The Jellyshroom Caves are a large cavern found below the Grassy Plateaus, Kelp Forest, and Safe Shallows. There are at least three entrances to the large Jellyshroom Cave near the safe shallows. The easiest entrance for beginners to find is the one near Lifepod 17. Another entrance can be found at the bottom of a cliff, where a kelp forest ends and goes down to the grassy plateaus.
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They are characterised by bioluminescent plants and coral structures
The Mushroom Forest Caves in Subnautica are characterised by their bioluminescent plants and coral structures. These caves are a small cave system with life forms and coral structures typical of the Mushroom Forest. Bioluminescent plants, such as Grue Clusters, guide the player through the caves' many passages. The caves are home to Cuddlefish eggs, with one egg found in a chamber close to the entrance of the cave. The entrance to the cave system is embedded into a cliff, facing the Bulb Zone, below the largest Tree Mushroom.
The Mushroom Forest Caves are part of a larger biome known as the Mushroom Forest. This biome is characterised by towering coral, known as Tree Mushrooms, as well as other types of flora and life forms. The Northeastern Mushroom Forest is the smaller of the two forests and is densely packed with Tree Mushrooms. It features cliffs that lead down to the Bulb Zone, and its bordering predators, such as Mesmers, Ampeels, and Bonesharks, often wander into this area.
The Mushroom Forest Caves are found within the stem of the Giant Tree Mushroom, with entrances at the top and bottom. The upper entrance is populated by Spadefish, while the bottom entrance faces northwest, near a Brain Coral. A second, smaller cave can be found at the base of the Giant Tree Mushroom, containing another Cuddlefish egg. Exclusive to this cave system are Coral Shell Plates, Large Lithium Deposits, and a single Brain Coral. Holefish and Shuttlebugs also inhabit this cave system.
The caves are a great source of resources, particularly Lithium and Shale Outcrops. They offer a connection to one of the Bulb Zone Caves, with long, winding tunnels that lead to and from a large central cave. The bioluminescent plants and coral structures of the Mushroom Forest Caves provide a unique and captivating environment for players to explore and navigate through.
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Two of the caves are home to Cuddlefish eggs
The Mushroom Forest Caves are a small cave system characterised by life forms and coral structures typical of the Mushroom Forest. Two of the caves are home to Cuddlefish eggs. These eggs can be found in a chamber close to the entrance of the cave. The entrance to this cave system is located embedded into a cliff, facing the Bulb Zone, below the largest Tree Mushroom.
The first cave contains an entrance at the top and bottom of the Giant Tree Mushroom, with the upper part being populated by Spadefish. The bottom entrance faces Northwest, near a Brain Coral, and the upper entrance faces Southeast. A second, smaller cave can be found at the base of the Giant Tree Mushroom, towards the East, containing a Cuddlefish egg.
Cuddlefish eggs are located in several biomes within Subnautica. They are usually found in the Jelly Shroom Cave, particularly near the base of Jellyshrooms. They can also be found in the Mushroom Forest, where the tall mushroom structures make it easier to navigate and spot eggs intermixed with foliage.
Players can also find Cuddlefish eggs in time capsules, which are containers that house items deposited by other Subnautica players. These capsules can be found scattered throughout the player's game.
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The caves are located below the largest Tree Mushroom
The Mushroom Forest Caves in Subnautica are a small cave system with life forms and coral structures that are typical of the Mushroom Forest. The entrance to this cave system is located below the largest Tree Mushroom, embedded into a cliff, facing the Bulb Zone. The caves also connect to one of the Bulb Zone Caves. This cave is particularly large and consists of long, winding tunnels that lead to and from a large central cave found inside. The first cave has an entrance at the top and bottom of the Giant Tree Mushroom, with the upper part populated by Spadefish. The bottom entrance faces northwest, near a Brain Coral, and the upper entrance faces southeast. A second, smaller cave can be found at the base of the Giant Tree Mushroom, towards the east, containing a Cuddlefish egg. This cave is home to two Cuddlefish eggs, which can be found in a chamber close to the entrance of the cave.
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They can be explored with the Seamoth or Prawn Suit
The Mushroom Forest Caves in Subnautica are a small cave system characterised by life forms and coral structures typical of the Mushroom Forest. The caves can be explored with the Seamoth or Prawn Suit. However, exploring with the Seamoth is dangerous 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 necessary. 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.
The entrance to the Mushroom Forest Caves is located embedded into a cliff, facing the Bulb Zone, below the largest Tree Mushroom. The first cave contains an entrance at the top and bottom of the Giant Tree Mushroom, with the upper part being populated by Spadefish. The bottom entrance faces northwest, near a Brain Coral, and the upper entrance faces southeast. A second, smaller cave can be found at the base of the Giant Tree Mushroom, towards the east, containing a Cuddlefish egg. This cave is particularly large and is made up of long, winding tunnels that lead to and from a large central cave found inside.
The Jellyshroom Caves are another cave system in Subnautica that can also be explored with the Seamoth or Prawn Suit. There are at least three entrances to the large Jellyshroom Cave near the safe shallows. The easiest entrance for beginners is the one near Lifepod 17. If you can get to 300m, you will be fine. Another entrance is located to the southeast of your lifepod, right on the border between the kelp forest and grassy plateau, and pretty close to the Aurora's engines. You can find the cave entrance at the bottom of the cliff.
The Jellyshroom Caves are dangerous to explore without a Seamoth, and it is recommended to have at least one Seamoth Depth Module MK1 or higher. The Seamoth Perimeter Defense System upgrade is also advisable due to the Crabsnakes' tendency to ambush the player from the Jellyshrooms. Exploring the Jellyshroom Caves with the Prawn Suit is possible but challenging without the necessary upgrades.
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Frequently asked questions
The entrance to the Mushroom Forest Caves is embedded into a cliff, facing the Bulb Zone, below the largest Tree Mushroom. The first cave has an entrance at the top and bottom of the Giant Tree Mushroom. The bottom entrance faces northwest, and the upper entrance faces southeast.
The entrance to the caves is near a Brain Coral and a Giant Tree Mushroom. The Giant Tree Mushroom is also a good landmark for finding the second, smaller cave, which is located at its base, towards the east.
The Mushroom Caves are home to Cuddlefish eggs and bioluminescent plants such as Grue Clusters, which guide players through the passages. The caves also connect to one of the Bulb Zone Caves.
It is advised to enter the caves with a Seamoth, preferably with sonar to navigate the cave system. A Seamoth Depth Module MK1 or higher is recommended due to the biome's depth. A Prawn Suit can also be used, but it is challenging to exit the caves without the Grappling Arm or Jump Jet Upgrade.
There are multiple entrances to the Mushroom Caves, including one to the southeast of your lifepod, at the border between the Kelp Forest and Grassy Plateau, near the Aurora's engines. Another entrance is located in the Western Grassy Plains, and the Southern Grassy Plains entrance leads to the base.
























