The Ghost Leviathan is a large, translucent predator from Subnautica, the underwater survival game where players explore an alien ocean planet. Its distant roar warns players they have strayed into dangerous open water, especially the empty void beyond the map known as the dead zone, where these creatures spawn. Clips of that warning cry spread through gameplay videos, horror edits and soundboards because the sound alone signals scale and danger without any visuals. It remains popular for creators who want an instantly recognisable deep-sea threat.