These fishermen were reeling in a fearsome 5-ft long black tip shark and were on the verge of hauling it into their boat when a dark shadow came up from the deep.
In one flash, a goliath grouper fish burst from the water and took their catch away from them.
In one bite a shark as big as a human adult disappears!
The fishermen dance around the boat in shock, no doubt wondering what would have happened if one of them had been in the water.
'Woooooooooooooow! Oh my God! Oh my God did he just eat it?' one shouts.
'It just grapped a freakin' ...(shark)!'
The incident happened a few days ago off the coast of Bonita Springs Florida, August 2014.
Giant grouper fish can grow over 10-ft long, weigh as much as 790-lbs and have massive mouths that swallow their prey whole, using heavy crushing teeth to digest the meal rather than biting.
There have been unconfirmed reports of them attacking humans although their preferred diet is other fish and octopuses, sea turtles, sharks and barracudas.
The footage has become an instant YouTube hit, the attraction summed up by one viewer, Smh, who wrote: "Damn nature....you scary."
Fidel Jiron Jr wrote: "So this poor shark thought its day was already bad, then it just gets worse," while Corey M said: "I was a snorkel guide in Key West for some time, and during my time down there in the water I ran into a Goliath Grouper a couple of times. These guys are seriously huge!"
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