Subnautica Wiki

Writhing Weed is a flora species found mainly in shallower biomes.

It is mostly found in the Grassy Plateaus and Safe Shallows. It has no use in the game and is purely cosmetic. The player can cut it with a knife to obtain Writhing Weed Seeds.


The Writhing Weed seems to be a cluster of small, purple, neon green tipped tentacles, capable of emitting bright bioluminescent glows.

Data Bank Entry

Slanted Tentacles.jpg

Well-adapted to both shallow waters and cave systems, this plant lives in symbiosis with a coral species which forms around the base of the stems.



  • The Writhing Weed was originally called the Purple Tentacle.
  • The coral species located under the plant look similar to those found underneath on the Slanted Shell Plate.