Spoiler Read at own risk

This article contains unmarked spoilers. Players new to the game would want to avoid or be cautious toward this article.

This article is about Blue Barnacles in Subnautica. To see this subject's article on the Below Zero Wiki, click here.
This article is about the Blue Barnacles. You may be looking for the Barnacle.

Blue Barnacles are a flora species found exclusively in the Primary Containment Facility Aquarium and Alien Vents rooms. Blue Barnacles come as Blue Barnacle Clusters, and singular Blue Barnacles.


Blue Barnacles resemble clusters of real life Barnacles, embedded in a calcified, dark gray base. They have a maw with a light turquoise bioluminescent glow. Despite resembling barnacles of Earth, they are a flora species.



  • Real life barnacles fall under the Fauna category, however, on the official Flora sheets for Subnautica, they are listed as Flora.
  • Blue Barnacles are remarkably similar to the Barnacle, which is a harvesting node found exclusively on adult Reefback Leviathans.
  • The Blue Barnacles were originally intended to be featured in the Twisty Bridges biome.
Community content is available under CC-BY-SA unless otherwise noted.