"My dad and I are fishing off the Florida Keys. We have our anchor out and had been fishing for about an hour. 15 minutes later the boat gets bumped and we rock a little bit, my dad jokingly saying "Looks like jaws is after us better stay away from the edges." 10 seconds after him saying that the boat begins moving backwards: we are being towed by our anchor line that's in the water. Whatever has it is now dragging the boat backwards slowly getting faster and our boat is getting pulled under too. Next thing I hear is "No f*cking way" as my dad drops his pole runs from the front to the back grabs a knife and cuts the anchor line.
"After that we decided that fishing was not in the cards that day."
"RAN 2000ish, Indian Ocean on watch maybe 0200. Pitch black except for stars and quiet apart from the diesels. I notice a humming sound, sorta halfway between hearing it and feeling it. This goes on for a while, but all of a sudden it got a lot more intense and suddenly I notice a glow way under the water. I thought it was bioluminescence on a shark or whale or something but it kept floating up and suddenly just SHOT off maybe half a naut mile taking the hum with it in about 1 or 2 seconds.
"Nothing can move that quick underwater. I reported it and it was logged but nothing came off it.
"Heard stories from shipmates about the same thing happening but the glow goes into the air, dunno about that but what I saw I have no explanation for."
"I do a lot of night fishing off of South Carolina and Florida. I get a lot of fish that are bitten in half by sharks. Some of them had to have been very, very large. When you reel in a large sportfish's head like some kind of sequel to The Old Man and the Sea and realize the shark is close to half the size of your boat miles and while you're miles offshore, essentially in the middle of nowhere, you get more than a little freaked out."
"Live by a dam on the Mississippi river in Iowa... The divers that have to go down and check the concrete always only go down once, after that there done. Just nope the f*ck out. One guy I know did 2 tours in Iraq he said it was nothing like that... Just freely be swimming along and all of a sudden 3 foot mouth of a cat fish just sitting there, waiting for something to swim by and into its hell hole. Water is always so murkey that you can't see from end to end of it. I remember when I was a kid, you could snag for carp down there. My dad hit a 7 foot cat that weighed in at around 85 lbs, but we couldn't keep them so we had to throw them back...
"Grandfather said similar things. He worked at a power plant right along the river and they had divers who would routinely need to go under and patch things up for the power plant under water. Said majority of them when down once and never again after seeing the size of some of the catfish below which they claimed could probably eat them.
"One of my art teachers in high school was also a diver and often did dives in one of the lakes in Arkansas. He regaled us with tales of catfish the size of small cars. He also had photos of the towns and settlements that got abandoned and flooded when they made the lake. Cool stuff."