There are countless simulation clips online, but one of the most popular creators in this space is Zack D. Films, a YouTuber known for breaking down things you probably never thought to ask about.
His channel covers everything from frightening scenarios, like how a single tooth could kill you, to unusual survival lessons, such as ways to make it through being buried alive. Zack has built a reputation for showing viewers answers to bizarre but fascinating questions.
The breakdown described the process step by step: “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 continued: “This freezing gas is injected into the wound and expands violently, destroying the tissue around it.”
The weapon itself is called the WASP injection CO2 knife. Interestingly, it wasn’t created for the internet or viral content but was first developed for divers who wanted a defense tool while swimming in open water where sharks could be present.
As explained by Blade City: “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.”
Of course, there’s no real-world footage of the knife being used on sharks. Instead, YouTubers have tested it on substitutes like ballistic gel, watermelons, and even plastic bottles to show off just how destructive the blade’s mechanism can be.
For those curious, the price isn’t cheap. The standard version of the knife typically costs around $500, while the larger WASP Bowie edition goes for closer to $600.
Others were quick to defend sharks and argue against the idea of using such a weapon, with another commenter adding: “Thats so mean. Sharks aren’t even normally violent unless threatened or something like that.”
So the question remains — is this knife a brilliant defense tool, or simply too brutal to justify?
