If you can, play it in VR.
Its breathtaking, one of the best VR games around. The immersion and visual quality cannot be described.
When you go real deep, or into the open abyss, you learn what the term claustrophobia" really is about.
Subnautica gets top notes from around the web, especially where they rank survival games. After this long time now I still fullheartly recommend it. Its pretty much unique and without comparable rival.