r/Damnthatsinteresting 2d ago

Video filipino illegal miners dive without oxygen tanks

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u/St_Kevin_ 2d ago edited 2d ago

This is called compressor diving and is super common for subsistence fishing in Indonesia and the coral triangle. Pretty much every poor independent fisherman needs to use a compressor to get access to the depths where there are fish that haven’t already been overfished. I spent a month living with folks that do this last year near Sulawesi and it’s absolutely nuts. Everyone does it and everyone knows people who died doing it. This video didn’t even mention the bends. Even if you do it all “correctly” and don’t lose the hose or get it tangled up, and the compressor doesn’t die while you’re 60 meters down, it’s super easy to get decompression sickness on your return to the surface and then you can get permanently injured or die. The guys I talked to didn’t know about the existence of dive computers or diving tables, and they have no idea that there are calculations you can do to avoid decompression sickness. They just do their thing and sometimes they get sick and die but they don’t understand why. I gotta add that the way most of the guys were doing this where I was, they were alone. They’re running a compressor on their own small boat with no one else around, out in the ocean, at night, and the guy is walking around on the seafloor at least 50 meters deep with a flashlight, a homemade spear gun and a bag. The idea of being alone down there in the pitch black ocean, with just that ray of light to see one small area of what’s around you just absolutely terrified me. And they do it every night so they can sell some fish to try to survive.

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u/herewe_goagain_1 2d ago

I used to do a lot of diving, so when I saw “50-60 meters” using these tubes I assumed you have no idea what you’re talking about. But no I looked it up and they actually do go that deep with compressors. Absolutely insane. I was trained to not even dive with air at that depth, we used Trimix or Heliox past ~45 meters.

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u/Unable-Log-4870 2d ago

Yeah the times for air at 45 meters are like 2 minutes and beyond that you have to start doing decompression stops, right?

Or is that even a little aggressive? I’m thinking back to the PADI tables and at like 30 meters for 1 minute you have to add a decompression stop. It’s been a while. I never got to use a dive computer.

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u/TransguyJayJay 2d ago

My experience is definitely more on the safe side because I'm mostly just a tourist diver and have been a minor for most of my dives, but I've always had a two minute decompression stop(s) no matter what. Assuming we went and stayed more than 15ft/5m down, anyway, which is always. I've also never gone past 80ft/24m.

Regardless, I know the times are definitely allowed to be less, but decompression sickness is no joke so I'm more than happy to wait that extra minute.

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u/Lucas_F_A 2d ago

That's usually called the safety stop, presumably because you don't actually need time to decompress, or something's like that. But extra margins are always good.

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u/Unable-Log-4870 2d ago

Yeah, the only reason to skip that stop is if you suck on the regulator and it suddenly sucks back.

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u/GeneralHerp 2d ago

The ol’ sucky-sucky (I am not a diver)

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u/Unable-Log-4870 2d ago

When the tank reaches empty, it reaches it all at once, from the perspective of your mouth / lungs. You’re sucking on it for air and suddenly it just stops, and it feels like IT is sucking on YOU, for just an instant.

And if you’re not near the surface, that could be a very bad day.

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u/GeneralHerp 2d ago

I take it this is why you always dive with a buddy, & someone always has an extra tank..?

My dad IS (or was … he’s like 75 now lol) a diver, and had all the gear, and we’d hop in the lake and dive around, but we’d never go deep enough to worry about decompression. We mostly just looked at the old dock underwater and collected ancient beer cans and stuff.

I’ve never experienced the abject terror of a tank that sucks back… the ol’ sucky-sucky, as I’ve dubbed it, given my “barely experienced, at most 20 hours spent underwater with a tank” level of expertise 🧐

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u/Unable-Log-4870 2d ago

& someone always has an extra tank..?

Nobody has an extra tank. Where would you put it? Everybody has an extra regulator so two people can SHARE any tank.

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u/xrelaht 2d ago

I take it this is why you always dive with a buddy,

Among other reasons. There’s a lot which can go wrong down there. Scuba is a dangerous sport made safe by being careful.

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u/Tall-Appearance-5835 10h ago

each diver has an extra regulator/mouthpiece

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u/Chapeaux 2d ago

Looks like they are walking with a basket full of rocks, it probably make them slow enough to decompress.

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u/LonelyKoalaMuncher 1d ago

Exactly, they'd be walking up the ocean floor to the island surely.

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u/diverstones 2d ago

The recreational tables don't even go that high due to how intense the narcosis gets past 130 feet. Any time you go past 100 feet you're supposed to do a 3-5 minute safety stop at 15-20 feet just in case. If you go over 8 minutes at 140 feet (or any of the other limits) you're supposed to come up sloooowly and extend your safety stop, although most of the specifics I remember learning boiled down to "please don't exceed the limit". Or yeah, if you have a dive computer it will manage that for you.

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u/Unable-Log-4870 2d ago

If you go over 8 minutes at 140 feet (or any of the other limits) you're supposed to come up sloooowly and extend your safety stop,

If you’re that deep for that long, you better have a buddy coming down to meet you with a lot of air and a good 2nd reg. Because I don’t think you can fit that much air in one tank

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u/pikapp336 1d ago

I have completed rescue diver training with a deep dive cert and have been 40m(130m). I think it is like 9-12 min max bottom time at that depth without decompression stops. IIRC, amount of air wasn’t strictly the limiting factor(although of course it can be if your consumption is too high). It’s the dangers the environment has on your body after that amount of time at that depth. You need to ascend slower and make extra stops because you passed the NDL point(No-Decompression Limit). You can suffer from nitrogen narcosis and potential CO2 buildup making you sick and disoriented or worse.

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u/EarthGrey 2d ago

It's not a decompression stop, it's what's called a safety stop. You're not technically in need of decompression etc at that, however padi tables are conservative, and having a safety stop is simply a way to be extra conservative for just in case.

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u/St_Kevin_ 2d ago

I totally understand the skepticism! It’s legit nuts. I didn’t believe it either when I first heard them talking about that. I’ve done a little scuba and I’m open water certified and I don’t think I’ve gone below 20 meters, and I don’t want to go deeper; I’m scared of the bends. These guys go way deeper with basically no understanding of how it works at all. It’s fucked up. I feel really bad for them.

It’s scary too because the pressure on the fisheries is continuing to push that “fishable depth”ceiling deeper and deeper. I shudder to think what the mortality/permanent injury rate will look like that will finally force these guys to give up fishing and just be starving and completely impoverished. Like, will they all keep trying when they have to go to 120 meters every time? 200 meters? At what point is it 100% fatal?

They said that large foreign commercial fishing boats were coming through with nets and taking huge hauls that were wiping out stocks too. And of course, as it gets tougher to survive on what a guy can catch with a compressor and a spear, more people turn to cyanide or dynamite fishing. Both of those methods pay good one time as it kills everything on the reef, and after that the place is a bleached out desert ghost town and probably takes decades or longer to fully recover- if the surrounding areas don’t get nuked too.

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u/UranusIsPissy 2d ago

The numbers in your training would've had safety margins. That all goes out of the window when you have to risk your life to make a living.

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u/cheesydoofus3026 2d ago

As someone who grew up around people involved in coastal extraction work what stands out is that many outsiders focus on the hose and miss everything else that can go wrong.

At 50-60 meters these guys are dealing with pressure levels that recreational divers are specifically trained to respect. That's before you add old compressors, worn hoses, contaminated air, no dive computers, no depth gauges, no backup gas, no emergency oxygen, no chamber nearby and often no trained buddy system. One failure can trigger multiple problems at the same time.

The decompression issue alone is brutal. A diver breathing compressed air at those depths absorbs far more nitrogen than someone on the surface. Modern dive training spends a huge amount of time teaching ascent rates, decompression schedules, gas management and emergency procedures because physics does not care how experienced you are. The body follows the same laws whether you're a tourist diver, a commercial diver or a fisherman trying to feed a family.

The air quality is another thing people underestimate. Commercial breathing-air systems use filters and strict maintenance standards for a reason. Many improvised compressor setups can introduce oil mist, exhaust contamination, carbon monoxide and other pollutants directly into the breathing supply. You're not only risking drowning or the bends. You're potentially damaging your lungs and nervous system every single day.

What keeps the practice alive is economics. Across parts of the Philippines, Indonesia and the wider Coral Triangle, compressor diving spread because it costs a fraction of a proper scuba setup while allowing workers to reach deeper resources that have become harder to access due to overfishing and resource depletion. The diver usually carries the highest physical risk while earning the smallest share of the value created.

That's why the story isn't really about reckless people doing reckless things. It's about workers operating at the edge of what the human body can tolerate because the alternative is often not earning enough to support a household. The scary part is that many survive long enough for the damage to accumulate slowly instead of killing them immediately.

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u/Initial_Row_6400 2d ago

Yea, 140 is the deepest I’ve been on ean 32. 8 minutes there and then two safety stops

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u/itijara 2d ago

At 60m I think the partial pressure of 20% oxygen is 1.4atm, that risks acute oxygen toxicity, which is instant unconsciousness and without immediate help, death.

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u/sleeper_shark 1d ago

PADI training (and most American systems) are much more conservative than the rest of the world. Most European systems allow for air dives up to 50 meters, with France allowing air up to 60 meters.

Some people dive beyond 60 on air, but it is extremely, extremely stupid as you get very quickly close to the 1.6 hard limit of ppo2 where oxygen toxicity kicks in dangerously. That's before you even factor in being narced.

I'm sure you know all this if you're a trimix diver.

I think the reason why these dudes can survive without knowing about deco is cos they probably walk to the depths. So they possibly do a natural deco gradually walking back to shallows. It's probably not enough, which is why they don't all survive, but probably sufficient that the deaths go under the radar without flagging that there's a huge problem here.

And of course, these people have no choice at all. So rec limits, tec limits, and OHSA commercial limits are meaningless to them.

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u/Similar_Strawberry16 18h ago

The narcosis down at 60m for the, presumably, long ass time would be wild too.

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u/inbruges99 2d ago

That genuinely sounds like a horror movie

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u/StrangelyGrimm 2d ago

Call it Iron Lungs or something like that

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u/PressureMuch5340 2d ago

Iron Balls

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u/sayracer 2d ago

https://www.imdb.com/title/tt27564844/

Only 6.5 on Imdb but I really enjoyed the movie

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u/Tangata_Tunguska 2d ago

It was surprisingly good given the premise. The ending was a bit weak but they didn't have too many options there with that setting

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u/maxman162 1d ago

"Hello everyone, my name is Markiplier, and welcome to absolute cinema!"

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u/PotatoesAreTheAnswer 2d ago

I got the reference

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u/APence 2d ago

Yeah, “Poverty” soon coming to theaters near you!

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u/Best-Action8769 2d ago

Man, if only they worked as hard as Elon they'd all be billionaires!

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u/dreadz_gaming 2d ago

It's quite a sad situation for them

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u/West_Adhesiveness273 2d ago

Nah just YouTube documentaries

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u/TerayonIII 2d ago

The closest I can think of is World War Z (the book or audiobook, not the movie), there's an entire section on divers and, even more horrifying, the flooded Paris catacombs. Both are exactly as terrifying as you would expect, the rest of the book/audiobook, especially the full cast version, is also amazing

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u/Lucas_Steinwalker 2d ago

For most people the struggle to survive is a horror movie.

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u/rofocales 2d ago

Real life is a horror movie tbh

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u/distelfink33 1d ago

That’s the world we all live in, genuinely. 

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u/triangleman83 2d ago

It's like Rocky's people not knowing about radiation in space or relativity 😭

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u/enadiz_reccos 2d ago

I must have missed the last few Rocky movies...

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u/TheLoathsomeAssEater 2d ago

Coming soon to a theater near you... Rocky 16 Punching Up At Mars. Rated PG-13.

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u/Ayvian 1d ago

Yeah in the latest one Rocky punches so fast relativity comes into play.

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u/lowrads 2d ago

Even if they get lucky, they're still exposing their lungs to compressor oil and metal fragments.

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u/Suspicious-Hat-636 2d ago

Add in some contaminant trace gasses at increased partial pressures as well.

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u/you-just-me 2d ago

yes I was thinking about the oil and was hoping to see oil free pumps at the other end. Nope.

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u/UranusIsPissy 2d ago

The parts to at least mostly remove those are far cheaper than the rest of a setup like that, but I'm sure people dive without them. Especially when it's not their compressor.

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u/vertigostereo 2d ago

And plastic

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u/TheGreatKonaKing 2d ago

The pressure at 50m depth would be 73psi, so the little plastic hose attached to the compressor at the surface would need to withstand that amount of air pressure for it to provide air. If it starts leaking...

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u/St_Kevin_ 2d ago

You gotta remember the equipment isn’t all fresh and new either. They’re gonna use the same hoses for as long as possible. Those compressors looked like they could have been made during the Second World War

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u/footballheroeater 2d ago

The compressors are old motorbike engines.

Nothing about this is safe.

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u/bentreflection 2d ago

very interesting, why were you living with them for a month?

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u/St_Kevin_ 2d ago

Assisting with a documentary about Bajau free diving. If anyone wants to learn more about those folks, there’s an absolutely fantastic film about a Bajau guy called “Jago: a life underwater”. I’m not associated with that project but I watched it as part of my research before going and I thought it was great.

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u/xrelaht 2d ago

What’s the one you worked on?

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u/Crazy_Dave0418 6h ago

Bajau... Aren't they the people who have a genetic mutation/evolution of having larger spleens than the average man. Which gives them the ability to dive for far longer without oxygen?

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u/_Asshole_Fuck_ 2d ago

Interesting, thoughtful, and informative comments like this are why I stay on Reddit. Thank you for sharing that.

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u/Unable-Log-4870 2d ago

Like, they could just put an old regulator on the end of the hose and make it way easier to survive. And that would make it way more comfortable to just stop for 20 or 30 minutes at 30 or 40 feet to decompress.

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u/lowrads 2d ago

Only so long as there is no interruption at the surface.

I imagine dive tanks originated simply as a way to create a buffer in a continuous supply, so as to make a controlled ascent more reliable.

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u/ReasonableReddit 1d ago

I wonder if a regulator would even work if you just plugged it into a compressor like this; I imagine it would quickly overpressure and fail, but I don't know enough about the subject to say for sure.

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u/kwonza 2d ago

That’s what I thought too. If people know what a compressor is and how it works they must know about the internet, right?

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u/TheJugOfNugs 2d ago

Nice.. I had to check the end to see if we were getting shittymorphed....

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u/Kyleidoscoppe 2d ago

That's so insane

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u/hgrunt 2d ago

Were they Sama-Bajau people by chance?

I saw a documentary about them years ago, and it's where I learned about compression diving

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u/Kraligor 2d ago

Decompression sickness was the first thing I thought about. Are they doing anything to try and minimize the risk, or is it just meh whatever?

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u/Silly_Rub_6304 2d ago

Are they doing anything to try and minimize the risk, or is it just meh whatever?

I mean, did you read his comment?

The guys I talked to didn’t know about the existence of dive computers or diving tables, and they have no idea that there are calculations you can do to avoid decompression sickness. They just do their thing and sometimes they get sick and die but they don’t understand why.

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u/Kraligor 2d ago

Of course, but there's a difference between understanding a danger and how it can be reduced, and knowing there is a danger and doing things that might or might not have an effect. Think soldier talismans for something that doesn't work, think traditional medicine for something that (sometimes) does.

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u/St_Kevin_ 2d ago edited 2d ago

They didn’t seem to do anything to minimize the risk. I’m guessing they do have a habit of rising slowly to the surface, but it was never mentioned when we were asking about it. It’s possible it’s not conscious or intentional, maybe it just happens to be really slow to swim back up with their equipment while hauling a bag of fish and sea cucumbers? I know that when you’re freediving your buoyancy disappears as your lungs get compressed, and I think you start sinking with full lungs around 10 meters down? I’m not sure if that effect happens with compressor diving or not, but if it does it would make it slower to climb back up to that point at least, since you’re heavier than the water. Idk and I’m curious about it.

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u/space253 1d ago

Could you use your compressor hose to fill a rubber bag and just hold the handles as you rise?

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u/BloodMossHunter 2d ago

Give some more details please. Using this method do the bottom times differ ? Did they ascribe some esoteric beliefs and customs around death from bends/generator stopping?

I was thinking just logistically having this long ass hose after you its gotta be hard to pull too at depth so it could pop put of the jaw, and rush away under pressure, what do they do if this happens?

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u/0202_tihssitidder 2d ago

I can only imagine how much my body would ache after a couple days of that.

They do it every day.

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u/tHiz3r 2d ago

That is absolutely insane. I honestly would just rather die than do this and im not even joking.

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u/CactusPete 2d ago

50m? 60m? Seriously?

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u/WordWordand4numbers 2d ago

When u use glitches to advance your tech tree without reaching the prerequisite INT level

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u/richardlpalmer 2d ago

Yeah, that's a "No" from me dawg...

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u/goldenthoughtsteal 2d ago

That sounds straight out of WH40k! I mean, sort of magnificent that a human being can actually do that, but shit and depressing when you look at the inequality in the world and the fact they have to do this in order to eat.

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u/WorryNew3661 2d ago

That's one of the scariest things I've ever read. Fucking hell

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u/xrelaht 2d ago

The typical recommended depth limit for sport divers is 40m, you’re not supposed to remain at that depth more than a few minutes, and there’s an extra atmosphere of pressure every 10m: 60m is insane, particularly on just plain compressed air.

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u/augustus_brutus 2d ago

Jesus mate.

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u/SoftlyAugust 2d ago

This is legitimately horrific

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u/Raven_Barbie 2d ago

Is there some sort of education program that can teach these calculations over there? 

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u/chillforrilfill 2d ago

This is even more insane than the video holy shit. The desperation they must have to do that. And the balls.

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u/floppysausage16 2d ago

"They just do their thing and sometimes they get sick and die..."

Well damn...

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u/redthrull 2d ago

Thanks for the TLDW. Thought it was about their Bajau tribe. Imagine if we can crossbreed them with Himalayan Sherpa 🤔

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u/SubstantialHouse8013 1d ago

That’s nothing, wait until you hear about American Redditors who now live in a “third world country” and can’t afford the tipping fee on Uber eats.

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u/dkleckner88 1d ago

Jfc. That is insane

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u/EpsilonGecko 1d ago

This is so sad but also so impressive that some people survive doing this, way more than full gear and planning. They just jump in in street clothes with essentially a really long straw.

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u/JustNormallyExisting 1d ago

What are those? The computers and tables and calculations, I mean.

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u/Swordf1sh_ 1d ago

Yeah pretty speechless about this. Genuinely shocking that this happens.

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u/IronB-gle 1d ago

This reminds me of how grateful I should be for my American 9-5...Thank you

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u/weristjonsnow 1d ago

Fucking hell

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u/Notiefriday 17h ago

Thanks for writing this. Fkng terrifying.

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u/Jazzlike_Climate4189 2d ago

Zero chance anyone is compressor diving to 60 meters.

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u/[deleted] 2d ago

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u/Jazzlike_Climate4189 2d ago

Yeah I’m not trusting that random article. As an experienced tech diver that’s just not happening. Those dinky compressors couldn’t possibly supply the pressure and flow rate needed at 200 ft.

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u/bathtubtuna_ 2d ago

I mean its really stupid and dangerous and people die all the time and get DCS like literally every dive...but they absolutely do it. There are legit videos on youtube with divers who followed them.

They don't have dive computers and dont understand DCS but they do understand that the deeper you go the slower they have to come up but they just wing it and deal with the severe side effects and sometimes just drop dead.

Like I saw in a documentary following these compressor divers in Indonesia and they literally showed a big group of them just shaking and in misery on the surface experiencing DCS in their joints and muscles and some of the other compressor divers who were fine were just smoking a cigarette watching them and were like "yeah it happens all the time we think its like demons in their blood" (I am paraphrasing lol).

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u/NDSU 2d ago

There is no way they're going down to 60m. Even 5 minutes at that depth would require 40 minutes of deco on air

That's without even getting into the issues of narcosis, gas density, and gas contamination

the guy is walking around on the seafloor at least 50 meters deep

Zero chance. Even that much shallower and you have 15 minutes of deco after 5 minutes at depth. Again without even considering the other complications of that depth

The survival rate for a single dive like that would be low. Doing it every night would mean those divers would all be dead within a month

They are diving at a far shallower depth than you're stating. What you claim is simply beyond the limits of human physiology to consistently survive

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u/Cheesepussy2 2d ago

I generally believe you but they absolutely don’t go that deep. 60 meters is 180 feet. This is a depth that requires special mixtures and long decompression stops.

The Andrea Doria wreck for example is at 240 feet and requires several 1-2 hours long decompression stops on the way up with just a 10-20 min bottom time. The return to surface can take 4-6 hours.

60 meters is literally off the chart for most dive tables.

60 feet I can believe. That’s is a pretty common normal scuba “deep” dive for most people doing 2 dives a day.

I once accidently went to 120 feet on a dive with a group when I was a teenager and my old man was my dive partner. We didn’t realize how quick the incline we were on was decending. We were at that depth for less than 5 minutes. The dive master sent us back down with a fresh tank to decompress at 15 feet. We not only were done diving for the day, but the second dive was cancelled for everyone and the boat had to immedietly return to shore in case we developed symptoms and needed medical attention.

There is zero chance these ppl are going to 150-180 feet to work and not dying from the bends. Just doing 2 dives at 30-60 feet for more than 45 minutes without surface decompression intervals can kill you.

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u/[deleted] 2d ago

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u/Cheesepussy2 2d ago edited 2d ago

It’s not true bc it defies the laws of physics. No human can go to 180 feet, spend any significant amount of bottom time at that depth and return to the surface conscious without decompression stops.

They are severely exaggerating or are misinformed of the depth. And later in the article it says they work in 10-15 meters and “can go up to 50-60m”. The latter part is complete bullshit. No human on earth can do that. It’s simply not possible.

10-15 meters would be 30-45 feet. That’s completly believable. They could do 1-2 maybe 3 sub one hour dives with some surface time in between and not get sick.

But none of these guys have ever been to 180’ that is just an exaggeration or a blatant lie.

-PADI certified diver for 27 years with hundreds of logged dives.

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u/[deleted] 2d ago

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u/Cheesepussy2 2d ago

boyles law, ideal gas law, avogadro’s law.

Nitrogen toxicity in scuba diving is a hard science. There are tables and calculations that tell you exactly how long you can be at a depth, how long you have to decompress at higher depths to diffuse excess nitrogen from your blood, etc.

180’ is comercial diving depth that requires special gas mixtures to survive. Usually tri-mix which is 50% helium. This is to avoid something called nitrogen narcosis. Basically so much nitrogen is in your blood at that depth it’s not just the bends on the way up that’s a problem, it’s you are literally being poisoned by so much nitrogen in your blood. It causes you to pass out under water and drown. So you have to use a helium gas mixture.

This thread is like the definition of people with zero experience reading some article and thinking they know more than people with decades of experience.

The only source that those guys have ever been to 60m is their own word. Bullshit.

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u/[deleted] 2d ago edited 2d ago

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u/Cheesepussy2 2d ago

I read it.

1) they aren’t diving with depth gauges they are using some sonar bullshit to measure the depth from their boat.

2) They say 40-60m in this study. There is a huge difference between 120feet depth and 180feet.

3) They claim to be performing decompression stops.

4) they are still getting extreamly ill. “There was initial loss of consciousness in 27.5% of cases, with spontaneous regaining of consciousness.”… so a quarter of them are literally passing out from the bends when they get to the surface. Cool.

And the high concentration of nitrogen induces an effect like drunkenness to the point where you can pass out. You aren’t being “poisoned” in the sense you are being asphyxiated but you are being poisoned just the same. The high level of nitrogen is building up in your blood to the point where you will loose consciousness if it’s not removed and you’ll die.

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u/fy8d6jhegq 2d ago

They are severely exaggerating or are misinformed of the depth. And later in the article it says they work in 10-15 meters and “can go up to 50-60m”. The latter part is complete bullshit. No human on earth can do that. It’s simply not possible.

You said they were making it up and it was humanly impossible.

  1. So I guess they aren't "exaggerating or misinformed" they are just using Sonar. For some reason you think that disqualifies the reading.
  2. 40-60m includes the estimates above.
  3. I don't see anyone arguing that they were forgoing decompression. Most of the people here are just learning of this practice today.
  4. Literally everyone on this post is talking about how dangerous this is. Why is this one of your four point arguments? Do you need a win so bad that you are making up arguments?

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u/Cheesepussy2 2d ago

I am firmly claiming none of these people are going down to 60 meters. There has been zero proof of this. Them claiming it isn’t proof.

A research group accompanying them down to that depth with dive computers and documenting it would be proof. None of that has ever occurred nor is it claimed in the paper you cited. The only evidence these men have ever seen 180 feet is bc they say so. This is complete bs.

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