A remarkable video has emerged from the United States of a huge shark repeatedly attacking two canoes full of people.
In the video, which was filmed of Key West, Florida, a fisherman stands in one canoe trying to reel in a bull shark when the monster fish races up from the deep and rams the vessel and another canoe which is alongside it.
The fisherman and passengers are almost thrown into the water by the force of the attack.
The shark isn't done there and rams the canoes several more times before eventually getting off the line and swimming away.
"Matt hooked this beast of a bull shark and it showed us just how ferocious they can be!" The filmer wrote online.
Although the clip was flimed in 2015, it has only just emerged online.