Crater Edge

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   <default>Crater Edge</default>
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Warning: Entering ecological dead zone. Adding report to databank.

― PDA, Dialogue

The Dead Zone borders the entire map of Subnautica. It is the area beyond the crater of an enormous, dormant, aquatic volcano, which is where Subnautica takes place.

The Dead Zone is the end of the map and has a small amount of unfinished terrain at 3000 meters depth. Past that terrain there is another, seemingly infinite drop.

Multiple adult Ghost Leviathans live in the Dead Zone, where they act as a deterrent for wandering players going outside of the playable area.

Spoiler alert: This section will reveal story-related material if expanded.
The Dead Zone  is said to only support two kinds of life, microscopic, and Leviathan class, meaning that prior to Carar's decimation of the ecosystem, this area may have been the natural habitat of the Sea Emperor Leviathan species.

Description

True to its name, the Dead Zone is a large open ocean devoid of any flora, coral, and all but one fauna species.

Fauna

• Ghost Leviathan

Data Bank Entry

Geological scans of this area show a steep decline in all directions. This data is consistent with the theory that that the Aurora crashed on the edge of a 2km x 2km volcanic crater. It has likely been millennia since an eruption reached the surface, encouraging the ecosystem within the crater to flourish. The ecology of the trench surrounding the crater supports only two kinds of life: microscopic, and leviathan class. Exploration is ill-advised.

Gallery

• 

  Drop off into the Dead Zone from the Grand Reef

• 

  The Dead Zone drop off from the Mountains

• 

  Edge of the Crash Zone

• 

  The massive drop off into the Dead Zone from the Bulb Zone

• 

  Terrain at the bottom of the Dead Zone

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  A group of Ghost Leviathans in the Dead Zone

Trivia

• Sea Dragon Leviathans, among other fauna, were planned to spawn in the Dead Zone at one point, but this idea was scrapped.
• The Dead Zone was originally called the Void.
• The Dead Zone is currently the deepest biome in the game.