Check out this amazing video that apparently has been on YouTube for a few years now, but is just now getting attention after it was posted as a gif to Reddit. Luckily one of the commenters was able to find the original (maybe?) online.
According to the uploader it happened on the St. Clair River in the Great Lakes.
Can’t say I’ve ever seen anything like it (on second thought, check the link below). Part of me actually thinks this guy was down there on purpose, but the sound alone gives me the shivers. Check it out:
Now check this out: Divers Almost Caught in Cruise Ship Propeller