> No, "normal" humans don't dive to 80m deep, where the explosion occurred.

This simply isn't true, I myself after a technical advancement in my PADI to be certified on a rebreather went >80m many times. It's absolute more common than it was in the past.

Those who are trained with special forces as alleged would also be required to be qualified.

I want to clarify my answer here as I made it seem a bit more nonchalant than it is, there is definitely some technical training that needs to be done to dive deeper, as you say no recreational scuba enthusiast should just try it. There are different gasses that you need and a whole different approach to preparation and decomp.

My main point is that it's not as rare as some might think, it's becoming more and more recreational.

The people who did it definitely took on risk, but in my eyes, more so because if something did happen to go wrong, there's no support to help you out (that we know of). It's a flying with 1 engine scenario. The fact that it was pulled off is impressive. But for any rec divers, don't try without the right training, equipment and people with you.

You can look this up on wikipedia you know: https://en.wikipedia.org/wiki/Deep_diving

"The open-sea diving depth record was achieved in 1988 by a team of COMEX and French Navy divers who performed pipeline connection exercises at a depth of 534 metres (1,750 ft) in the Mediterranean Sea as part of the "Hydra 8" programme employing heliox and hydrox."

Sounds like 80 meters is cake walk for any modern naval institution.

An 80 meter bounce dive is a cake walk for anyone with advanced technical dive training. Any motivated middle-class person could acquire the necessary skills and equipment to do it safely in a few years of steady effort. It doesn't require anything like the complex saturation diving procedures and equipment used by COMEX or certain naval institutions.

You have no clue about the "facts". Diving to 80m+ is no big deal now. Hundreds of random amateur tech divers do that every weekend as a casual hobby. They typically own their own gear (not rental), which can purchased new for about $30K including training. The equipment such as a closed-circuit rebreather (CCR) and drysuit is somewhat specialized but widely available on the open market from numerous manufacturers. I know a number of divers living in that region who have done much more complex and challenging dives, although obtaining and using the explosives is a separate issue.

Hard, but doable. Here is the analysis by an experience diver.

https://www-ostsee--zeitung-de.translate.goog/panorama/exper...

Right, Achim Schlöffel is legitimate. In terms of complex tech diving he has been there and done that, and has the pictures to prove it. When he says something can be done there's no reason to doubt him.

https://is-expl.com/about/instructors/wgZMC8Y7

Googling for 10 seconds comes up with

>Advanced Mixed Gas Diver (80m)...The Advanced Mixed Gas Diver course is a great way to extend already considerable open-circuit mixed gas diving skills.

There are a lot of rummors going around (Espcially in Poland) that diver name was Volodymer Z. and currently he is in Ukraine.

Not trying to give any hints there, just sharing some rummors.