Grand Reef

The Grand Reef is a unique deep biome in Subnautica that covers the southwestern portion of the map.

It is home to many types of fauna, including the herbivore Sea Treader. It is also known for its unique types of flora, from the luminous Floating Stones to the peculiar Membrain Trees.

Below this area, the player can find a large cavern system featuring the same type of flora and fauna, with the addition of Crabsquids and Jellyrays.

Commonly found harvesting nodes in the Grand Reef are basalt outcrops, as well as many other type of rare crystals.

Scattered deep within the area are many hydrothermal vents, aka "black smokers".

Resources

 * Aluminum Oxide
 * Diamond
 * Gold
 * Membrain Tree Seed
 * Mercury Ore
 * Moon Pool Fragment
 * Nuclear Reactor Fragment
 * Quartz
 * Thermal Plant Fragment
 * Uraninite Crystal

Fauna

 * Airsack
 * Boomerang
 * Crabsquid (*)
 * Eyeye
 * Hoopfish
 * Jellyray (*)
 * Reginald
 * Sea Treader
 * Spadefish

Flora
(*) for the Deep Grand Reef only
 * Floating Stones
 * Membrain Tree
 * Purple Pinecone (*)

Gallery
For a more complete gallery, visit Grand Reef/Gallery.