Recreational diving attracts countless people all over the globe.

It’s a unique experience being one with ocean, exploring its depths and its mysteries. However, some divers challenge themselves to go pass others’ limits.

The typical diving depth is a little over 100 feet. Anything deeper could cause some serious effects. That’s why even the most experienced technical divers lose their lives in the process.

One of the most famous stories is that of Israeli-Russian diving instructor, Yuri Lipski. On April 28, 2000, he plunged over 300 feet into the infamous Blue Hole — “Divers’ Cemetery” as others would call it.

That isn’t even the cherry on top. When his parents asked divers to recover Lipski’s body, the discovered he had a camera strapped to his helmet. The recovered footage showed Lipski’s final moments as he crashed to the ocean floor.

So what exactly happened to him?

It turns out that after reaching 300 feet, he experienced nitrogen narcosis. This caused a sense of euphoria, overconfidence, impaired judgment and hallucinations. Plus, he had on just the regular tank full of air when he needed to have multiple tanks filled with trimix — a combination of oxygen, nitrogen, and helium.

The Blue Hole is the infamous snorkeling and diving site off the coast of Dahab, Egypt. Everyday divers take the journey riding a camel or a jeep to explore this coral-lined underwater sinkhole that goes 394 feet deep.

130 people have already lost their lives trying to overcome this lethal hole. However, it only made the site even more attractive to divers who wish to push their boundaries.