Grand Reef

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

Description
The Grand Reef is home to many types of fauna, including the large herbivorous Sea Treader. It is also known for its unique types of flora, from the luminous Floating Stones to the peculiar Membrain Trees. It features it's own cave system, the Grand Reef Caves.

Below this area, the player can find a large cavern system featuring the similar types of flora and fauna, with the addition of Crabsquids and Jellyrays and the absence of the Sea Treader. Above the Grand Reef, is the Floating Island.

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

Scattered deep within the Grand Reef are hydrothermal vents, five in total.

Resources= Fauna= Flora=
 * Aluminum Oxide Crystal
 * Diamond
 * Gold
 * Large Copper Deposit
 * Large Lead Deposit
 * Large Quartz Deposit
 * Large Salt Deposit
 * Membrain Tree Seed
 * Mercury Ore
 * Quartz
 * Uraninite Crystal
 * Bladderfish
 * Boomerang
 * Eyeye
 * Hoopfish
 * Reginald
 * Sea Treader
 * Shoal of Fish
 * Spadefish
 * Warper
 * Floating Stones
 * Membrain Tree

Future Plans

 * A  Precursor Teleporter  will be present in this biome.

Gallery
In Game Screenshots=

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

Trivia

 * In earlier builds, the Grand Reef had large pillar-like spikes, some of which were visible above the surface. However, these were removed, and was explained to be temporary.
 * Certain structures have curious house-like caverns, very reminiscent of grotto-homes in primitive cultures.