This is an underwater video of a huge group of sharks swarming a boat after the fisherman threw their unwanted catch over the side. That sounds wasteful. Still, I swear I saw a scene like this in a movie once. Except it wasn't actually a movie, it was a vision in a crystal ball. "Wait -- are you saying..." Yep, it's how I'm going to go. There will be no last-minute mermaid rescue.
Keep going for the video.
Thanks to Tracie, who tried to convince me this was leaked footage from a much darker sequel to Finding Nemo.