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This article is about the Deep Grand Reef. If this is not what you are looking for, see Grand Reef (Disambiguation).

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

― PDA, Dialogue

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The Deep Grand Reef is a large cave system located beneath the Grand Reef, featuring many hydrothermal vents.

It is accessed by cracks or holes found in the Grand Reef and is considerably more dangerous than it. The Cyclops could navigate it, albeit limited by the rock formations.

Description

Though it lacks the Membrain Trees found in the Grand Reef, it shares the same Anchor Pods. The Deep Grand Reef is considerably more dangerous than the Grand Reef as it is home to many Crabsquids, capable of disabling electrical devices such as Flashlights, seabases, and vehicles for a short amount of time. Crabsquids are also noted by the PDA as an “unusual energy signature”.

Spoiler alert: The following section contains story related material.


At the deepest point in this area, there is an entrance to the Lost River.

The final Degasi seabase left by the Degasi survivors can be found in the Deep Grand Reef.



Spoiler alert: The following section contains story related material.


All Databoxes are found in the Degasi Seabase:

Spoiler alert: The following section contains story related material.


All Scannables are found in the Degasi Seabase found in the cave:

Spoiler alert: The following section contains story related material.


All items are found in the Degasi Seabase found in the biome:


Achievement

Main article: Achievements
Spoiler alert: The following section contains story related material.
SeamonstersAchievement Seamonsters

Find the Degasi habitat in the deep grand reef


How to obtain: The player must find the Degasi Seabase in the Deep Grand Reef and pickup PDAs there.


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