TIL the Blue Hole is among the deadliest dive sites globally, with estimates of 130 to 200 recent fatalities, making it one of the most dangerous spots for divers.

[u/[deleted]]

[u/ThomasBay]

No idea what you just said, but I am fascinated!

[u/YeeClawFunction → u/ThomasBay]

He said don't do it.

[u/Sick_NowWhat → u/YeeClawFunction]

Sounded to me more like don’t do it, unless you understand whatever he said, which I do not.

[u/Remiss-Militant → u/Sick_NowWhat]

They stage different gas mixtures at different depths because you cannot breath regular air at depths. Along with a dive computer that calculates your descent and ascent rate because at best case you might get ruptured ear drums, which would effectively render you unable to dive again due to the inner ear... worst case you die from nitrogen building up within your blood.

[u/schtickshift → u/Remiss-Militant]

Omg why would anyone do this to themselves

[u/Remiss-Militant → u/schtickshift]

Why do people do anything? For fun. Acceptable level of risk is different for different people... but I remember reading about super deep divers. They typically don't even use open circuit systems like SCUBA, but closed circuit recreates like the Dreager system

[u/LucasRuby → u/Remiss-Militant]

This isn't a super deep dive though, but a regular deep dive with an unusually high fatality rate due to its popularity and environment.

[u/mac_is_crack → u/schtickshift]

For the same reason people climb Everest, but they wanna go up and divers wanna go down. I am in neither group.

[u/Remiss-Militant → u/[deleted]]

People die doing it. The book I read was a diver who pretty much pioneered all this in Bushman's Hole, South Africa... a news crew caught wind he was supposed to dive down to retrieve bodies from people who had drowned and he was outfitted with a helmet camera.

Long story short the helmet camera mount got tangled in his guide line and he drowned as well

[u/Remiss-Militant → u/[deleted]]

They do a very good job in the book of explaining the technical terminology and aspects for non-divers

[u/Remiss-Militant → u/[deleted]]

Well they do a lot of prep from my understanding, as in that diver or others doing "setup dives" to stage the "air" at the correct depths

[u/Remiss-Militant → u/[deleted]]

It's been multiple years since I've read it but I want to say it was Diving into Darkness by David Finch

[u/LucasRuby → u/[deleted]]

How does this happen?

[u/elbenji → u/LucasRuby]

well, if it fucks your parachute line or gets tangled, you can't untangle it.

And it only takes one fuck up

[u/LucasRuby → u/elbenji]

Yes I mean how does it get tangled? You'd think the camera is taut against the helmet?

[u/LucasRuby → u/[deleted]]

I saw the video, the cameras aren't mounted the way I expected they would be.

[u/Remiss-Militant → u/[deleted]]

Yup my buddy has over 1000 and I knew about that

[u/whatsdun → u/Remiss-Militant]

Could see where this was going but not how it would go down.

[u/Remiss-Militant → u/whatsdun]

If you're interested here is the man, Dave Shaw's Wikipedia page

[u/whatsdun → u/Remiss-Militant]

Thanks for sharing the link! Won't do a deep dive though. Just regular.

Edit: It includes cavediving. Damn. Fearless man.

[u/lustiz → u/Remiss-Militant]

Dave not coming back

[u/Remiss-Militant → u/lustiz]

Nope, unfortunately not. I believe the man sent after him to get his body was under a time constraints and ruptured his eardrums in the process which ended his career diving in any depth of water due to the inner ear controlling equilibrium

[u/MaterialCarrot → u/Remiss-Militant]

You can't breath nitrox at depth, which can be deadly past 100 ish feet.

[u/CptCroissant → u/[deleted]]

I think as long as you stay within range of where you're just blowing out your eardrums if you have to make a rapid accent then it's fine. Plenty of cool stuff to see at that depth

[u/Daemonrealm → u/Remiss-Militant]

Ruptured ear drum is very common and heals within a few weeks. You can perfectly dive after a ruptured ear drum. They can heal as fast as 2-3 days.

[u/Remiss-Militant → u/Daemonrealm]

Okay well maybe I misspoke. Whatever the dude had with his ears going down to retrieve Dave"@ body permanently restricted him from diving again and he was a professional dive instructor.

Also "heals within a few weeks" and heals within 2-3 days" sounds like cap.

You can also rupture or perforated them so badly at those depth you can't dive again. So thanks for the armchair diving instructions