A Goliath grouper fish has eaten a 4ft shark - in one single bite.
A video of the incident, filmed off the coast of Bonita Springs in Florida, was uploaded onto YouTube, and has since gone viral with 30 million hits.
A group of young men are on a fishing trip and get the shock of their life when the black-tip shark on the end of their line is eaten whole by a huge hungry grouper.
The Atlantic Goliath grouper is a large saltwater fish of the grouper family found primarily in shallow tropical waters among coral and artificial reefs at depths from 5 to 50 metres (16ft to 164 ft).
Its range includes the Florida Keys, the Bahamas, most of the Caribbean, and practically all of the Brazilian coast. On some occasions, it is caught in New England off Maine and Massachusetts. In the eastern Atlantic Ocean, they can be found from the Congo to Senegal.
The world record for a hook and line-captured specimen is 309 kg (681lb), caught off Fernandina Beach, Florida, in 1961. They are usually around 180 kg (400lb) when mature.
Goliath grouper eat crustaceans, other fish, octopi, young sea turtles, barracudas - and, obviously, sharks.
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