The video above shows a 'monster' shark biting off another shark's tail, The Sun reported.
The shark was bitten off its tail.
A group of anglers off the coast of Miami, Florida, USA discovered this scene and filmed video.
At first, the group managed to catch a bull shark and were preparing to pull it onto the boat. But just a second later, a large shark appeared and attacked the small shark.
The video shows that it bites off the tail of a cow shark and chews 'the tip' , causing blood to splatter.
"Look, a shark is trying to eat a shark," one person shouted in the video. "Oh my god! Can you shoot that scene?"
