Dave Not Coming Back | FULL DOCUMENTARY

8,000,000,000. Humanity just fine..

That's an incredible story..

Waw when they found Dave floating, that really got me. This documentary deserves awards.

diving to those deeps ain't no joke and you have to RESPECT THE RULES.

I choose to believe that the spirits of Dave and Deon didn't want anyone else risking themselves for them. RIP.

Beautifully done documentary. Dave would be proud💖

Movin', grovin, vibin, slidin' to this thanks to Lawrence Johnson

Well made documentary, thank you! How many people will be able to die, doing something they love? Sometimes, no matter the intentions, something can go wrong. That never stopped us humans, from doing dangerous things anyway. It's the human spirit to explore & to dare, even though we leave our loved ones behind, which we will have to do anyway, one day, whether we like to or not. It's part of life, part of the human experience.

Dave was a bit of an odd character. He's a bit before my time, but I know people who knew him, and his story is pretty odd. Most advanced technical divers have been diving for decades, I'm 49 and have been diving since I was 16, and it was 10 years before I got into any kind of tech diving, 16 before I got into caving. But Dave started diving late and rapidly advanced into tech diving and on to caving just in a few years. He had some kind of natural aptitude for it and it seemingly was just right for him, and he kept successfully pushing the boundaries. However, if you're an advanced diver, specifically a cave diver, you know that the very idea of what he tried to do is extreme, many would say foolish. I've never been as deep as Boesmansgat, but I have been on a few very deep dives, and when you get to depths like those, you don't think about pulling off any sort of advanced maneuvers. Most depth records are just touching the target depth and then immediately turn around, for several reasons. First of all, gas consumption, where you burn through gas at shocking rates. Even with a rebreather this can become an issue. And the related issue is decompression, where every breath you take at such a depth earns you 20 minutes of additional deco. Then there's the factor of the breathing loop mixture when diving with a rebreather: briefly, when breathing normally, or using an open loop diving system, you inhale gas - air if at the surface - and exhale. The exhale gas is slightly lower in oxygen content and slightly higher in CO2 content than what you inhaled, but there's plenty of oxygen left in it that you, on an open system, just expel into the water as bubbles and it's wasted. With a rebreather, the gas goes through a CO2 scrubber that removes the CO2, and then you inhale it again, and once the Oxygen level gets to low, more is added. This ensures that you use the oxygen you're bringing much more efficiently, and thus you can stay at depth longer and don't have to carry as much gas with you. However, when you're diving deeper, the gas mixture of surface air containing 21% oxygen, 78% nitrogen and 1% other gasses doesn't work; the pressure makes for several effects, for example does nitrogen become narcotic, and oxygen can become toxic if the concentration is unaltered. So instead of normal air, we breathe a mixture of oxygen, nitrogen and helium, and balancing those for the depth you're going to and the length of the dive is a huge part of the skill that goes into technical diving. And as we get really deep, there's no optimal mixture that makes us function just as well as we do at the surface; there will be some level of narcotic effect, and the oxygen concentration is optimized for balanced breathing. So when on a rebreather, basically the scrubber, the distribution system, the breathing tube and your lungs for a closed system filled with a finely balanced mixture to keep you alive. However, if you start doing physical work, increasing your breathing rate and changing the composition of what your body expels from the lungs, this can cause this balance to break. So, trying to perform any sort of challenging task at that depth, on a rebreather seems extremely risky. Now, at the surface, or at shallow depth, something like getting a body into a bag isn't that difficult. But at 280+ meters, Dave would have been narced to the point where it would feel like having had just come home from a very wet night out, messing up both his coordination, ability to reason, and sense of self preservation. Add to this the fact that the body didn't behave like he expected as it was buoyant and started to float, and this became to much for his diminished reasoning abilities at that point: Of course he should have just given up, and the body would have floated up by itself, but when you're in that state of mind, you can't think, you just do what you planned, which was "get the body in the bag". Then you hear him starting to breathe more rapidly and heavily, and at that point it's probably already over, this upsets the mixture which further deteriorates the reasoning abilities, and it rapidly takes away the physical abilities as well. To me, it seems like Dave had gotten a bit to used to always succeeding when pushing the limits of his diving. Yes, he had the skillset to be able to pull off the recovery, but the plan called for nothing going wrong, which is a bad way of planning when dealing with something so dangerous as diving at those depths. But of course, most extreme records have been set by people who have been willing to risk their lives to a plan that relies on everything going as planned, which is probably why I will never be a record holder in anything. My background as a military leader has instead drilled into me that plans never really hold up to contact with the enemy, so you should always plan for the plan to fail.

This is a nightmare

Dave is a hero. He kept his promise to Deions parents and brought him back

it’s wild how calm everyone was when they learned Dave was dead.

Watching this after the Maldives diving disaster has made me realise how strong willed and kind these volunteer rescuers are. They're not paid and risk their lives to give families closure. May Dave's soul rest in peace.

RIP BROTHERS What a heroic performance from the hole Team ❤

Drowning is such a painful death ,Dave was struggling for his life on the camera

Even though fleeting, this documentary restored my faith in humanity. I wish for a better ending though for all

He went in the multi level mine in korea that's crazy foh

Thank you!

Who’s here because of the Maldives diver’s fate?

"the safest thing a diver can do on a dive is not dive"😢