The ocean could make a person paranoid. The lack of light, the exhausting pressure, and the sensory deprivation led to the brain grasping at anything it could to make sense of its environment…with very mixed results.
I swear every minute that passes with the crew being down in the ship makes me more and more on edge. It’s so nerve wracking, but in the best way possible. The fear of being isolated in such a depraved environment with virtually nothing but your own thoughts and the lack of senses… ugh, it makes me so uncomfortable. The author is doing a great job at describing how the divers feel.