My wife's a dive master. When she's working, it's her job to take the divers in her charge under the water and, safely, show them what's worth seeing while they're down there. It's all fish, rays and the occasional shark. I don't recall her ever mentioning fictional mass murderers, but that might be because she's never gone diving in Minnesota.
Back in 2013, some genius had the idea to to plant a statue of Jason Voorhees under 120 feet of water at the bottom of a lake in Minnesota. A diver by the name of Curtis Lahr was good enough to take some video of it. Lahr's video is pretty short, but it's long enough to give you a feeling of how surprising/shitty it would be to find the statue waiting for you under so much dark water.
