Crater Edge

The Dead Zone is an area that borders the entire map of Subnautica, which currently has no use. It is the area beyond the drop off of a massive volcano, which is where the story of Subnautica is set atop of.

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.

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

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.