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Blue Barnacles

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This article contains information that is updated for the latest Experimental Version of Subnautica. Players using stable mode may find this information inaccurate.

This article is about the Blue Barnacles. You may be looking for the Barnacle.

Blue Barnacles are a type of Flora found exclusively in the Primary Containment Facility Aquarium.

There are barnacles found on Reefbacks that share a model with the singular Blue Barnacles. These act similarly to Limestone Outcrops.


The 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.

Blue Barnacles come as Blue Barnacle Clusters, and singular Blue Barnacles.



  • Barnacles fall under the Fauna category, however, on the official Flora sheets for Subnautica, they are listed as Flora.
  • Blue Barnacles were planned to be in the Twisty Bridges, but then placed in the Aquarium in the Primary Containment Facility.