When I was a kid, I used to love the beach. There's just something about the sand, the heat and the sound of waves crashing that used to always put me at peace.
Unfortunately, I had a really bad experience once where I bumped my head while swimming to the bottom once and I lost my bearings, and it took me awhile to find the surface. This put a deep fear of water in me that I still struggle with.
Playing Subnautica is bringing all of that to the surface.