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A group of whale watchers caught the moment a Great White shark started chowing down on a whale. You can see the clip here:
The clip was shared on Facebook by whale watching company Captain John Boats, which is based in Massachusetts in the US.
In the clip, a dead whale, that appears to be a humpback, can be seen floating in the ocean off Cape Cod, shortly before a shark appears and begins to tear chunks off it. According to the company that shared the video, a second shark also turned up and joined in with the meal.
Captain John Boats explained: "What a beautiful day for a whale watch.
"Our morning whale watch was filled with humpbacks! We started off with a couple of solo whales and ended our trip watching a mom and calf while the calf was nursing.
"This afternoon was a trip for the record books! We started off our trip by taking a look at a whale who was unfortunately deceased.
"While we were there two enormous white sharks came to feast!
"We stood by while the research team collected video of these two doing what sharks do best!"
People who were on the boat at the time, commented on the video to say it had been an 'amazing' spectacle.
One person wrote: "My daughter and I were on this trip. Absolutely amazing!"
While another said: "Best whale watch ever! Today was such an amazing experience!"
The larger of the two sharks was reportedly a whopping 18ft long.
Speaking to The Boston Herald, Captain John Goggins - from Captain John Boats - said: "It was the first time I had ever seen this happen.
"People on board were pretty excited. There was a lot of yelling, 'Oh my God! Wow!'"
Peter Corkeron, who heads up the whale research team at the New England Aquarium, said Great Whites along the coast of Cape Cod usually eat seals, but they will happily tuck into a whale if the opportunity presents itself.
He said: "A dead whale is a lot of really easy food for Great White sharks.
"They're easy to find. They float and hang around.
"A dead whale is like the biggest smorgasbord a shark could ever dream of."
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