Deep Grand Reef

This article is about the Deep Grand Reef. You may be looking for the Grand Reef.

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

Detecting a titanium mass somewhere in this area. Unable to confirm whether it originated on the Aurora.

― PDA, Dialogue

The Deep Grand Reef is the deeper cavern system located under the Grand Reef, featuring many hydrothermal vents. Though it lacks the Membrain Trees of the Grand Reef, it shares the same Floating Stones. The Deep Grand Reef is considerably more dangerous than the Grand Reef as it is home to many Crabsquids, capable of disabling electrical devices and vehicles.

At the deepest point in this area, there is an entrance to the Inactive Lava Zone. Close by is a large hole leading to the Lost River Ghost Canyon.

An abandoned seabase left by the Degasi survivors can be found in the Deep Grand Reef.

Resources

• Aluminum Oxide Crystal
• Diamond
• Gold
• Mercury Ore
• Salt Deposit
• Uraninite Crystal

Fauna

• Boomerang
• Crabsquid
• Jellyray
• Reginald
• Shoal of Fish
• Spadefish

Flora

• Floating Stones
• Purple Pinecone

Gallery

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  Overview

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  Aluminum Oxide found scattered in the caves around the area

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  Large thermal vents, aka "smokers", found at the bottom of the Deep Grand Reef

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  A screenshot of the abandoned Degasi base in the Deep Grand Reef

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  Reginald and mercury crystals in Deep Grand Reef

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  Diamonds can be found in the cave floor and walls of the area

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