User blog comment:Gush958/What is the scariest place in Subnautica?/@comment-29389763-20170320125312

Dunes. It's a very quiet biome, which adds to the tension. Sand sharks aren't scary, but they CAN pop out of the sand, which can make you jump. The Reaper Leviathans are the high-point, with several of them patrolling the area, their loud, echoey roars audible from so very far away. That's why I don't go there.