A simulation video has revealed how the 'world's deadliest knife' would work during a shark attack.
There are many simulation videos across the web, but perhaps the most famous creator on YouTube is of course Zack D. Films - who documents things you didn't even realise you needed to know.
From the terrifying simulation of how a tooth can kill you, to learning how you could survive being buried alive, Zack really does have the answers to everything.
And a recent viral entry from the YouTuber detailed how the 'world's deadliest knife' would work during a shark attack, and if used correctly, would see the shark explode.
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The simulation explained: "Stab the shark and press the button in the knife's handle. This triggers a CO2 canister hidden inside, causing it to burst. As it does, it shoots compressed gas through a tube in the blade, before coming out of the tip."
It went on: "This freezing gas is injected into the wound and expands violently, destroying the tissue around it."
Basically, the shockwave is enough to explode the shark from the inside, which should mean you survive the shark attack.
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The knife in question is known as the wasp injection CO2 knife, which were actually originally developed by divers as protection against sharks in the open waters.
Blade City explains: "This weapon injects a freezing cold ball of compressed gas, approximately the size of a basketball, at 800psi nearly instantly. The effects of this injection will drop many of the world’s largest land predators.
"The effects of the compressed gas not only cause over-inflation during ascent when used underwater, but also freezes all tissues and organs surrounding the point of injection on land or at sea."
Perhaps unsurprisingly, there is no video footage of the shark in action on a shark, though YouTubers have tested the weapon on ballistic gel, plastic bottles, and even watermelons to showcase how the mechanics of the thing actually work.
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The standard models of the knife will set you back $500, while the larger WASP Bowie model sets buyers back $600.
Based off the simulation, people are very much divided by the weapon being used as a form of defence, as one person penned: "The worst part is about exploding them, sharks are actually pretty harmless if you don’t alert them."
Meanwhile, a second added: "Thats so mean. Sharks aren't even normally violent unless threatened or something like that."
What do you think?
Callum Jones