Just when you thought it was safe to go back in the water, a group of Brazilian fishermen have released a video showing just how savage a school of piranha fish with a meal in front of them can be.
In the video uploaded onto YouTube over the weekend, a group of Brazilian fishermen are caught throwing chunks of meat into piranha-infested waters.
Within seconds, dozens of piranhas are captured tearing apart the meat in a furious feeding frenzy. As the clip goes on, even more fish are filmed joining the banquet,making the meat disappear within seconds.
The footage, which would make anyone think twice about booking an Amazon cruise, has gone viral, with nearly 350,000 people watching the one-minute long clip posted online by a man who calls himself Joao Antonio Cruz Junior.
Piranhas are native to South America and are found along The Amazon River.
They are known for their razor-sharp teeth and furious group attacks when hungry.
They can attack humans too and every year Piranha hundreds of attacks are reported throughout South America.
The most notable piranha incident in recent times came in Argentina in December 2013, when an attack by a school of hungry piranhas saw 70 people injured and several children lose fingers and toes.
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