Earthen Coral Tubes (Subnautica)

+# Earthen Coral Tubes (Subnautica)+ +![Earthen Coral Tubes](https://wiki.subnautica.com/sn/images/Earthen_Coral_Tubes.png?edad0)+ +| Category | Coral |+| :--- | :--- |+| **Biomes** | Bulb Zone Caves, Underwater Islands, Underwater Islands Caves |+| **Harvestable** | No |+| **Debug Spawn** | browntubes |+ +Earthen Coral Tubes are a non-harvestable coral species. They grow on the walls and ceiling of certain caves and are purely decorative. These can also be picked up with the Propulsion Cannon or blasted away with the Repulsion Cannon.+ +## Appearance+ +Earthen Coral Tubes are a light brown, tubular coral that range from being short and rotund to long and skinny, with light brown tips. They are almost always found in clusters of twenty or more. The inside of some tubes have an orange bioluminescent glow.+ +## Data Bank Entry+ +Genetic resemblances to the giant coral tubes encountered elsewhere suggests evolutionary divergence approximately 100,000 years ago, with this subspecies being substantially lower in calcium content, and specializing in growing in smaller, denser packs at deeper levels.+ +Assessment: No practical applications discovered+ +## Gallery+ +![Earthen Coral Tubes' in the Bulb Zone Caves](https://wiki.subnautica.com/sn/images/thumb/BrownTubesGallery2.png/200px-BrownTubesGallery2.png?9a677)+*Earthen Coral Tubes' in the Bulb Zone Caves*+ +![Earthen Coral Tubes are found in the Underwater Islands](https://wiki.subnautica.com/sn/images/thumb/BrownTubesUnderiSlands.png/200px-BrownTubesUnderiSlands.png?b57e8)+*Earthen Coral Tubes are found in the Underwater Islands*+ +![Earthen Coral Tubes are bioluminescent](https://wiki.subnautica.com/sn/images/thumb/Brown_Coral_Tubes_%283%29.jpg/200px-Brown_Coral_Tubes_%283%29.jpg?4fb24)+*Earthen Coral Tubes are bioluminescent*+ +![A cluster of glowing earthen coral tubes](https://wiki.subnautica.com/sn/images/thumb/A_cluster_of_glowing_earthen_coral_tubes.jpg/200px-A_cluster_of_glowing_earthen_coral_tubes.jpg?d3430)+*A cluster of glowing earthen coral tubes*+ +## Trivia+ +- The former name for the Earthen Coral Tubes was Brown Coral Tubes.+- There are only two instances of bioluminescent Earthen Coral Tubes that have been found, both relatively close to one another.