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Tree Leech

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The Tree Leech, formerly known as Barnacle Sucker, is a non-hazardous decorative type of life form belonging to the flora category.

It is found growing on the side of Tree Mushrooms or on the walls of the Mushroom Forest Caves and the Mountain Range Caves.


The Tree Leech is a small, circular plant having a hole in the center surrounded by jagged tooth-like structures.

It is capable of emitting dull pink bioluminescent glows.

Data Bank EntryEdit

Tree Leech

Parasitic, fungus-like growth found attached to other flora. An enzyme is released by the organism which dissolves a hole in the skin of the host, from which it leaches nutrients directly.

Outer, tooth-lined jaw serves no identified purpose. May be used during a different stage of the organism's lifecycle?

Assessment: Exploitable fungal enzymes



  • The Tree Leech was originally called the Barnacle Sucker.
  • Official artworks released by the developers have listed Tree Leeches as potential hazards in the future updates.
  • Earlier versions of Subnautica featured an unimplemented giant crab-like fauna called the Sandworm, that launched surprise attacks on the player from a burrow that greatly resembled a large Tree Leech. It's possible at one point this was the additional stage of lifecycle hinted at in the PDA, and their reason for being listed as a hazard. However the Sandworm has since been removed.

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