I used to do a lot of night dives hunting for lobster off the coast of California. We’d start at 9 or 10 at night so everything is obviously pitch black besides where we were pointing our lights. Every so often I’d get this unshakable feeling that something big was watching or following me. Sometimes I could quiet that part of my brain and continue with the dive.

Other times I couldn’t shake the feeling and would end the dive after a few minutes. It’s a hard feeling to describe but I guess I’d compare it to being in a haunted house but 50ft underwater in complete darkness.