The sea is just too big for people not to have complicated feelings about, especially when it comes to things like the still on-patrol submarines of the U.S. Navy. There are tales of hallucinations, weird natural events, and rare sightings among the many creepy things people saw at sea. Maybe it's the isolation. Maybe it's the constant bobbing and omnipresent exhaustion of anyone working at sea. Whatever it is, weird stuff happens out there.