There are many places divers can go in the water. Sometimes, the water is a bit murky or very much so. Those waters can be eerie, but it is likely people with thalassophobia will be just as creeped out by the infamous “underwater fog.” This fog is pretty weird to see. We’re used to seeing it on the surface near water, but underwater it forms in a similar way. Complex interactions with ocean evaporation, atmospheric pressure, shore temps, etc. cause this to take place. It’s creepy regardless.