Understanding Grand Reef
A deep blue biome with floating anchor pods, advanced resources and dangerous creatures.
This is an original reference for the first Subnautica. Your current depth rating, oxygen, available tools and navigation route determine when an objective is practical. Follow actual in-game PDA and Fabricator information for any values that vary by version.
How to use this information
Scout from the safer outer edge and mark a route before entering the deeper portions.
What to avoid
Visibility and depth can lead to overconfidence about the return ascent.