I've had a lifelong fear of large bodies of water, maybe because I grew up smackdab in the middle of the Sonoran Desert. It's bad enough that I can only tread water in a lake or, heaven forbid, the ocean, for a few seconds before I start getting panicky.
I learned I was thalassophobic when I was a young child and water-skiing in a nearby lake. I wiped out, and when my head was briefly under water, I opened my eyes and looked down toward the bottom of the lake.
I didn't even see anything, but I knew I never wanted to see it again. What would be immeasurably more terrifying than that experience would be actually seeing something.
A fish, some seaweed, anything to remind me I'm not being supported by land. What would completely paralyze me with terror would be seeing something really big, like a shipwreck.
My palms genuinely get sweaty just thinking about it, and so, it makes absolutely zero sense that I decided to play a new horror game demo at Steam Next Fest that is literally, explicitly about taking pictures of shipwrecks on the ocean floor.