Subnautica Wiki
This article is about the Sparse Reef. You may be looking for the Deep Sparse Reef.


Biodiversity in this region is unusually low. Cause unknown.

― PDA, Dialogue


The Sparse Reef is a biome located southwest of Lifepod 5, bordering one of the Grassy Plateaus, the Blood Kelp Trench, the Sea Treader's Path, the Grand Reef and Kelp Forests. As its name implies, this area is very sparse and is home to a few types of small fauna and flora.

It also houses its own cave system, the Deep Sparse Reef. It can be found near the wreck in this biome.


The Sparse Reef is composed of relatively flat areas covered by green mounds scattered with Table Coral as well as large fissures where most of the Bioluminescent flora inhabit, notably the Eye Stalks.

There are also spire-like structures found along the border of the Sparse Reef next to the Grassy Plateaus, and near the Grand Reef. Found within these spires is a small entrance to the Grand Reef Caves, towards the Southeast.

The main hazard in the Sparse Reef are the small clusters of Tiger Plants found in the deeper portions of the biome that can cause heavy damage to unaware players.

Spoiler alert: The following section contains story related material.

An Alien Vent Entrance Point and a Sanctuary Cache are found in the Deep Sparse Reef. Lifepod 19 is also found in the deep area of this biome.



  • The voice of Donald Trump saying "China"[1] is featured in the soundtrack of the Sparse Reef. Listen closely to the song above at 1:18 and 1:04.


  1. Audio artist Simon "kamakazi" Chylinski tweeted about this in January 2016.