How deep can you dive before being crushed?
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- How deep can you dive before being crushed?
As far back as ancient Greek and Roman times, humans have always been fascinated with diving deep below the ocean surface.
Whether searching for food, treasures, or simply driven by curiosity, the challenge of diving down deeper and deeper has been one of a constant battle with a mighty force - water pressure.
The deeper we go underwater, the greater the water pressure upon our lungs and the more dangerous it becomes.
Let’s take a look at how far down we can go - with and without equipment.
You may be surprised.
But first, we need to understand how water pressure works.
On land at sea level, the air pressure that surrounds us pushes down at about 6.5kg per square inch otherwise known as 1 atmosphere.
Why don’t we feel it? Because the fluids in our body are pushing back with roughly the same force.
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Ocean gate catastrophe has me researching all this crazy stuff
Same
Me too
Same
me too... :( :( :(
😂me tooooo
That titan thing got me watching everything sea related
The recent catastrophe of the Titan submersible have me researching physics, ocean dives, and the science behind all this. This is an awesome accounting of ocean diving! 5 ⭐️! Thanks
You are not alone 😂
I'd question some of his "knowledge". Eg weighted sledge and balloon to rocket yo Surface.
If you rocket to Surface from depth you'll get decompression sickness.
This is when the air that's been under pressure has entered your blood but if you "rocket up" the air doesn't have chance to leave your blood safely and as pressure decreases it turns into air bubbles in your blood.
This can be fatal with air bubbles blocking blood vessels and even getting to the brain
As an advanced open water scuba diver and certified divemaster, I can tell you that a person won't be "crushed" diving. Your scuba regulator will continue to give you air at a pressure equivalent to the depth your at, therefore no crushing occurs because pressure is equalized inside and outside your body. A full 80cu Aluminum tank is pressurized to 3000 psi which is about the same pressure as 2000 meters of salt water. Deeper and you could not breathe.. The problem is not being crushed, its that the chemistry (behavior) of gases changes with increasing pressure. Your body chemistry is adapted to life at sea level pressure. Breathing pressurized air changes that chemistry and it becomes toxic and deadly, including oxygen. Using a special gas mix called Hydrox, its possible to dive to 2000 ft (600m). Now having said all that, keep in mind that free divers who hold their breath and dive, will experience "crushing" of their lungs, sinuses and air spaces as they descend.
What you are talking about !! The human body will be crushed to like a toothpaste at certain depths. At 3500 feet no chance
isnt gas accumulated in body and blood vessels due to high pressure that kills diver?
Air is compressed as you go deeper so your cells carry far more oxygen then normal. So long as it's compressed it's fine. If you go up rapidly it decompresses before you can breathe it out causing your cells to burst, that funny amount of air outside your cells can now accumulate and block the flow of blood in your veins, if this is in your heart or brain it's likely fatal. So its critical to go up slowly. Going up a little to fast will give you some side effects, going up way to fast will kill you.
Also: nitrox doesn’t allow you to go deeper, as mentioned in the video. The opposite is true: you get oxygen toxication earlier.
@minerran, I could be wrong, but extreme force on diatomic 0-0 could cause it to turn into Ozone (0-0-0)? Also, have you ever seen a shark on one of you're dives? I don't know why, and I don't care because it's harmless, but I have developed this fierce infatuation with sharks, and the shark's are coming back! \m/ Take care, brother. Do you're thing, and do not feed the trolls!
Now that ocean gate tragedy has happened, I'm trying to understand how they felt while being crushed
I don’t think they felt anything tbh, probably very quick. Though we may never know.
It would have been fairly quick maybe only a few seconds
Yes, it was instantaneous.
The human body can handle higher pressure if it's gradual. Instant increase in pressure equals instant death.
As you have probably found out, they did not feel! My only question was I heard somewhere that it was detected that the attached weights had been dropped and the vessel was on an ascending trajectory meaning their was some sort of warning before the implosion. Only the mother ship could verify this or if they find the weights still attached to parts of the hull or not?
Oceangate out here creating the next generation of marine biologists 😂
After Watching Oceangate and their catastrophe experiment All of a sudden I'm learning hydrosphere,physics and the composite or metal 😱😱😱
Ocean gate has me researching this at 3 am
Yup
But they didn't research
Every since the Ocean 🌊 Gate tragedy I been looking curious on what could have happened underwater so many feet!
nice use of emoji, rip ocean gate 🐳🐬💧😵😵
@@sebastianfjorn💀
I learned at an young age to respect the ocean
That's the truth
I'm going to be honest if I'm in swimming pool with a depth of 10 feet if I try too touch the bottom I find the pressure on my head to be too much, so I have no clue how people are able to free dive over 100 meters..
Well that is because you don’t equalize your ears. Once you learn how to do that you don’t feel the pressure
@@L.Lmost people can go down to 30 meters with enough training. 100 meters is definitely crazy
They do it because they are stupid. Hope I cleared that up for you.
And to think I was scared when I was getting over my fear of driving by learning how to drive. I can’t imagine how terrifying and how hard it is to stay calm while diving that deep.
Nitrox doesn't allow you to go deeper. It allows you to stay shallow, longer. Tri-mix and then heliox allows you to go deeper.
I have always had a fascination with the the deep sea but haven’t really thought about humans in it.
I was a submariner in the USN, can't say how deep we go, all we are allowed to say is "greater than 800 feet (243 m)". 🙂
As someone who has suffered from a collapsed lung, though completely unrelated to diving, I would just like to inform everyone on exactly what it was like for me. My situation will be a little different, though, because mine was a tension pneumothorax on one side, whereas I would imagine divers would have both their lungs crushed.
When it only partially collapses, it HURTS. From my memory, aside from the shortness of breath, I was in so much pain I could only be in certain positions comfortably. When it got to a major collapse, it literally didnt hurt anymore. And by the point where I was basically only living on 1 lung, I felt completely normal aside from I had half of my breath capacity. If you're reading this, breathe in deeply until your lungs are completely full. Imagine that, but in under half the time. Pretty scary. I went from being someone who is known for good physical activity to someone who could not make a 100m walk. Basically, when your lungs are collapsing, it is literally exhausting doing any physical movement and I have respect for the divers who are swimming while going through this.
It's unlikely they would get a broadband signal, so they probably couldn't read it.
@@michaellavery4899 bruh lmao
I had pneumothorax to my left lung 7 or so times before I finally had the surgery to remove the small blebs on my lung that were causing it. It hurts. Bad. Like someone has stabbed you in the back with a kitchen knife.. deep breaths feel like someone is spinning the blade inside. Such a sharp pain that forces you to breath very shallow and then you don’t get enough air. God I don’t miss that.
Are you tall, thin and dark haired? That’s the usual conditions for a spontaneous pneumothorax, it’s not known why. I’ll tell you about my collapsed lung. It was 24 April 1985 and my friends alcoholic father stabbed me in the chest. It bled and started bubbling and whistling and I felt light headed. The lung collapsing probably saved my life as it constricted the bleeding. At hospital they told me I lost 4 pints of blood and the knife was very sharp as there was no bruising around the cut and the guy had previously cut through a bicycle tyre with that knife. A month In hospital, an operation to clean out my lung and I’m back to normal.
Well 1 lung is better than no lung. Get it?
There’s been many scenarios where submarines are stuck on the sea floor many metres below the surface and the crew to escape have to swim up but first they have to breathe out and as they rise and pressure lowers their lungs expand. Failure to breathe out first would probably result in the lungs bursting. Submariners who did this say it feels natural as your lungs expand as you rise. Also humans tend to be buoyant at the surface but below 10 metres the pressures pushing the body in make the human body heavier than water so you have to swim up against your weight.
😊
Who else is here after the oceangate story
All of us I reckon 😊😢
RIP sub & people
Everyone
It’s crazy how much the foot traffic the Titan tragedy has garnished over ocean-based videos about crush depth, what happens to you, etc. like hardly anybody was interested before, now it feels like ev-ver-ry body is, myself included.
Its certainly increased interest in deep sea technology. So some good may come from all this.
That means oceangate passengers are cremated by sea pressure......rescuer will never find the bodies 😔
You got that right
15 beats per minute? Holy shit I wouldn’t want to feel that close to flatline
Mannnnn
crazy how water just came down from space and made a pool we call the ocean
then the moon came along and was like "lemme waterbend"
and the sun is playing bayblade with the whole solar system
Our bodies can't reach anywhere near the bottom. Not even submarines can get to the oceans underneath the oceans. It's like hitting a brick wall. It's insane!!!
Yup,,,,OceanGate got me here
In western Australia a long time ago I once snorkelled down to the flat sea bottom 15 feet or 4.5 meters down, and that was deep enough for me, and I never did it again.
how long ago? im just curious
@@huhnoodles647860 years ago
What I heard is for every 1 minute spent at 1,000 foot depth adds 1 hour of decompression time. So if you spend too much time down there you’re looking at upwards of 24+ hours of decompression time
Also it’s a little misleading to say being at depth is like having 500lbs psi all around your body. When diving at depth the effect of pressure is not felt around your tissues, it wouldn’t feel like you have the weight of six cars all around you, rather it acts on your lungs and gasses in your body. You wouldn’t be crushed under the weight of the ocean at 1000 foot depth, but your lungs would be compressed to a fraction of their initial size. and decompression becomes extremely dangerous if it isn’t done in a slow and controlled manner. The gasses in your blood and tissue compartments is compressed, so naturally when going back to the surface the gas needs to decompress and it expands. If you were to get rocketed to the surface from a thousand foot depth your tissues would practically explode
I get what you're saying only those who understand what he actually mean knows when he talking giving metaphor examples. If he doesn't use cars, planes, boats comparison everything else will be boring. Also even swimming up normal pace after being down deep in the ocean for long hours divers have died from brain damage after getting to the top of the surface. After all this research I read sources of people trying to climb Mount Everest also many have died getting close to the top but can't make it back 11,000 meters tallest peak in the world above Sea level. It's in humans nature to always wanting to explore the impossible knowing they will die. it's amazing how the planet earth has so many mysteries and stuff yet to discover people like adventures.
You don't need decompression in closed vehicles. That's for divers and open bells.
it’s hard to get my head around how much water is on the planet
If you go to the highest hill with clear view of a passing plane, and you see it flying at 30,000 feet. That's how much water is on the planet. It goes as far down as you see the aircraft above
@@myshubbycan I ask where I might see an example of this or like exactly what to type in
Interesting
@@myshubby Not quite. Average depth is about 13,500 feet for the whole earth now. If the land were all the same distance from the center of the earth, then the ocean depth would be about 11,000 feet all over the planet.
@@woodsie5474
Does that include the wall of ice at the end of the flat disc?🤪
His name is James, James Cameron
The bravest pioneer
No budget too steep, no sea too deep
Who's that?
It's him, James Cameron
James, James Cameron explorer of the sea
With a dying thirst to be the first
Could it be? Yeah that's him!
James Cameron
I guess the algorithm knew the right time to suggest this to me
Same 😂
Deep diving has way more things that can kill you before water psi crushing you. Assuming you're diving outside a vehicle
nitrox lets you stay down longer but it actually does not let you go deeper. It limits the depth you can go to depending on the concentration of oxygen in the nitrox mix you are using. Oxygen becomes toxic at depth.
there is so much incorrect information in this video lol
Glad someone called it out, otherwise I would.@@returnofblank
I feel like if we woulda stayed in the water we woulda evolved into mermaids😂 no but Fr I’m serious
Bruhh😂😂
We definitely would’ve evolved into something different
Ive always been fascinated with deep water dives, cave divings & saturation divers. The divers getting narced in deep dives is something really terrifying... The one accident that I still remember giving me chills is the byford dolphin accident! Horrible way to go... I hope the recent ocean gate accident warns people about safety being the top most priority with no compromise!
Underrated channel. Nice video. Very useful.
I would probably die just by jumping in the water!😎
About 300 meters, according to my knowledge, for scuba.
To go deeper you will need a cyclops class suit that keeps the pressure of 1 atmosphere inside
That is true for diving with helium and oxygen, but if you swap helium for hydrogen you can go at least as far as 700 m, I don't know about the max depth, but a simulated dive (in a pressure chamber) has been done with hydrox down to 701 m. Obviously most sane-ish people would prefer to avoid a hydrogen oxygen mixture though.
@@christiangudmundsson8390 that's for sane people, though
Some prefer being crushed with 350 atmospheres just for fun, not warning anyone
@@kuroshirai9811 yup, apparently that's how it is
The Titan Five brought me here
Actually, nitrox is NOT a good gas for deep dives, say >40-50 meters because the O2 partial pressure can become toxic at that depth
"People think the tanks are full of air."
"They're actually full of a mix of gases."
"Oh, and btw air is a mix of gases."
😂😂
90% of videos about diving on youtube is full of errors like that lol. Also using nitrox to dive deeper... only if you want to die from seizures under water lol
The decompression stops is what really limits how deep we can dive
I'll just stay away from the ocean. I got no plans on turning into fish paste like those people did on the Titan.
The amount of water in this world can you imagine how many more people there would be if no water!? What a shocking thought
How many more people? There would be -8 billion people... Negative 8 billion people more. No water, everyone would die
Enriched air allows you to stay underwater longer without going into decompression, however it does not allow you to go deeper.
As a diver myself I love this video well educated and well put together.
Ocean gate got me searching
At Titanic depth the pressure is about 5800 pounds per square inch. Death would have been instant.
People keep asking what it feels like...I keep saying just imagine your lungs being crushed to the size of a penny in under 1 second!
@@PimpSolja49 They were completely crushed in less time than a single nerve signal could travel to the brain...so they didn't feel or know anything. It was as instant a death as you can get. At that pressure, the walls of the sub caved in faster than mach 3.
@@BlazinLow305 I said under 1 second. So I'm not wrong! I know it happened in prob 1 or 2 milliseconds. Also, they were vaporized by the heat that's created by the pressure being compressed! I know they felt No pain.
@@PimpSolja49 The ocean is the most nonsensical thing to exist that many of us just live next to, and the heat of the sun is also pathetic because the ocean and some of the stuff in it can hit so hard that the thermal energy made is hotter than the sun.
Excellent presentation. Learned a ton. So much for that career as a Navy Seal! 😳
That's not a career, that's a passion you have to have, and obviously do not. You must believe in what you do.
@@ghostwriter1415if that passion comes with death, can you blame him for forfeiting?
@@ghostwriter1415 Not drinking that Jim Jones cherry kill-aid.
Navy Seals do not dive deep. They dive close to surface. It is only to get from A to B.
Irrelevant comment to the trash@@ghostwriter1415
So would it be fair to say, it would be like being buried under sand or dirt. The more of it, the heavy the weight upon my body.
uumm, imagine 5000 or more pounds of pressure per square inch on your body! Or just imagine you lungs being crushed to the size of a penny in under two seconds!
Almost. The pressure you feel is from the weight of the dirt. Primarily due to gravity. The high pressure of the deep ocean crushes you on ALL directions. Trying to compress you into a single point. What happened however, was an implosion. Not only was the sudden pressure change and water crushing you, the very tissues of your body gets shredded on all directions.
No, it would be a complete and immediate crush effect like 500 mountains falling on you at once.
Your channel is very underrated! Keep it up! :)
Good video. One thing though. Nitrox dos not let you go deeper. On air with 21% oxygen you can dive to 66 meters. (You would get narced though) After that the oxygen becomes toxic. Nitrox with a higher % of oxygen would become toxic sooner. The benefit of Nitrox is that your nitrogen loading is less so your decompression time is reduced. You just need to remain above the recommended max depth for your mix.
I was about to make a comment about this
Right on spot! 100% Oxygen becomes toxic at 6 meters (5 if you want to be overly safe)...
Nice educational video.
@@guillermopelaez5859 well it depends I did dives to 60 feet 18 meters on pure O2 and endurance dive at 24 feet 8 meters for 3 hours at fast pace swim.
Also for deep diving I did a 55 meters with 3% O2 97% nitrogen. It is the equivalent of 70 meters on air.
@Lou Lou 12 not what I was taught, but I could be wrong... would recheck my notes...
Although I know that for military applications, figures tend to be more extreme.
@@guillermopelaez5859 yes you have that correct lol we push it a little further but greater risk.
oceangate and it's Titan made us learn more about diving
1:00 Wha a joke: "6.5 kg per inch^2". Either you should use metric units or not, but not a mixture of them! Pressure is force per surface area, so the metric unit is 1 Pa = 1 N/m^2 (1 Pascal = 1 Newton per square metre). You can also say 1 hPa = 1 mbar (100 Pascal = 1/1000 bar), so 1 bar = 100000 Pascal. And 1 bar corresponds to 1 atm (atmosphere), the air pressure at sea level.
After being PADI certified in 1977 , one month later, flew to Miami then Bimini. By the end of the week, had made a 150’ dive next to the continental shelf. Neal Watson verified it in my dive book.
Now im uh Oceanologist since the Ocean gate tragedy 🤷
There seem some errors regarding freediving. Most freedivers without gear are indeed around 30M and in but in competitions they exceed 100m. Herbert's unofficial record on a weighted sled is 253.2m or 831 ftbecause he blacked out on the attempt. TLDR: there seems to be no maximum
Those who went ultra deep (>250m) and died did not die as a result of collapsed lungs (impossible, diving gear regulators automatically provide breathing gases at the same pressure as the surrounding water column, thus overcoming any external pressure on the chest and lungs, resulting in a pressure equilibrium) or brain failure due to a too fast ascent (the ascent is extremely carefully staged with decompression stops, where excess dissolved nitrogen is secreted from the blood into the lungs and exhaled), but rather of things such as CO2.
The problem with a dive to 250 or even 300 meters is that at such enormous depths your breathing gases are automatically supplied at the same pressure as the overhead water column, aka ~26 to 31 bar), and at such high pressures the breathing gases are extremely dense and as a result much more strenuous to inhale. On top of that the CO2 your body produces and normally would exhale now starts to collect at the bottom of your lungs, thanks to it being heavier than air or any other breathing gas. The more you start to struggle with the strenusous breathing, the more CO2 your body produces, and it being heavier than the breathing gas your lungs have great difficult exhaling it as it tends to remain in your lungs. One of the side effects of high CO2 concentrations is shortness of breath and faster breathing, an automatic brain reflex as your body tries to desperately expel that CO2. But as you start to breath more rapidly, you struggle to do so against the dense breathing gas, even more CO2 is produced, which you have even more difficulty expelling, causing your breathing rate to spiral out of control as you frantically breath harder and harder, and soon you will pass out from the hyperventilation and drown. Dave Shaw suffered from it. At great depths (anything over 100-150 meters) just the breathing alone is already difficult, but with proper technique and focus it can be kept in check. However as soon as any additional exertion is added on top of normal diving, at such depths the added exertion is an almost guaranteed death from excess CO2. Many divers who died at very great depth died from it because of the added, unplanned exertion, often as a result of emergencies. For example the group of divers from Finland who went to dive at Norway's deepest underwater cave, which bottomed out at 180 meters of depth, and died as a result of a simple problem which at normal diving depth would have been no problem. And the same with David Shaw, who tried to retrieve the corpse of a dead diver at Boesmansgat, 300+ meters deep, got entangled in the body bag and died. Probably many more I haven't even thought of.
Thanks Pieter for the thorough explanation of CO2's impact on our lungs when deep-sea diving. Of course there are many expert divers who know this quite too well, but most divers barely understand the science behind their equipment. Perhaps you may have saved a life or 2, since diving can be so enjoyable, and peaceful / tranquil yet extremely deadly.
@@tascrphs You're welcome, it was my pleasure, and thank you for the kind comment!
Well now this has happened I think we shall have more students research about the deep sea and have better understanding
Deep sea engineering has been researched fully and people who know what they are doing have never imploded. In fact this is the first submersible that has imploded in the history of mankind.
Nah, the risks were already well known. It's not lack of our understanding of deep sea. It's a company underestimating safety protocols, as most tragedies.
Came Here After Titan Submarine Issue..😶🤝🏻
I scuba dive. The deepest I ever been was 160 feet.
Crazy question but how do you swim back up ?
ever since ocean gate all of these have been recommended
I have always wanted to know this!
Am i the only one who slowed down around 2:18 to .25x speed to somewhat visualise how a 15 BPM heart would look like?🤣😵💫
1:40 ;; 2:29 ;; 2:50 ;; 3:34 ;; 3:59 ;; 5:08 ;; 6:35 ;; 7:46 Mariana Trench ;; 8:35
The human body is absolutely not meant for deep diving. Yet we do it anyway.
“The more experienced divers can slow their heart rate to 15 bpm. That’s slower than someone in a coma!”
*Ritz cracker ad with uplifting energetic music*
R.I.P to all the Titan & Titanic victims - God bless their souls ❤
This is not mastering knowledge, this is more like writing a paper on a subject you don't know anything about.
all deep water related topic are getting the traffic
There is a lot of misinformation spread in this video. First, he kind of touched on the fact that scuba divers breathe compressed air, yes. But what he didn’t say is that as a result your lungs do not collapse because your regulator adapts to the pressure around you to give you enough air to inflate your lungs. So at a great depth it will just give you more air, but with that you will be able to inflate your lungs theoretically at any depth (obviously only if the regulator is made for great depth).
Then, Nitrox is NOT made to dive deeper. On the contrary, it limits the depth you can go due to oxygen toxicity. It increases the time you can stay at the bottom INSIDE the depth limits to every specific mixture of gas. You absorb less nitrogen in your tissues due to more oxygen and less nitrogen in the gas you‘re breathing. But any partial pressure above 1,6 can be deadly for a human. So never try to dive „deep“ with Nitrox!
I wonder how I've suddenly begun unquenchable thirst for physics that I actually hated in school thanks to the boring physics teacher back there🤣🤣
OceanGate got us watching alot of stuff
James Cameron had to go into the Mariana Trench to pull up the bar.
Also, 100% pure oxygen in deadly at 13ft underwater. fun fact
I think 100% oxygen is fatal at any level. My zoology professor told us a story of some students who nearly suffocated to death by taking hits of pure oxygen. They didn't know it either, until he found them literally blue in the face and screamed they needed to breathe or die. Scary stuff!!
@japankasasagi You body can't sense a lack of oxygen. It's the build up of carbon dioxide that triggers your body to breathe. With no CO2, you don't know that you're suffocating.
who is watching this after the news of ocean gate tragedy 🙋🏽♂️
15 beats per minute is insane 🤯
Who else used Google to convert meters to feet throughout the video? 🙋♂️
What kind of units are 6.5kg/inch2 Jesus have respect
Serious mistake in this video: nitrox does not allow you to go deeper because of the risk of oxygen toxicity.
6.5 kilograms per square inch? That's NASA level of mixing measuring systems!
Pressure in the air does rise, A force that’s felt in every guise. Water too can feel the weight, As pressure builds and won’t abate.
Implosion looms, a threat so near, A crushing force that all can hear. But with release, the pressure wanes, And calm returns to air and plains.
Absolutely superb video, chock full of information.
Google can’t answer this one so here goes….What depth would a SCUBA tank implode at?
I'm here after watching 'Dave Shaw Not Coming Back' Documentary
Stockton Rush's Oceangate flop project got me here. TY for this info.
RIP to the people who figured this out
At three to four atmospheres (110 feet), you will be unable to breathe and be crushed.
If you are talking about SCUBA using ordinary air then about 100 feet is a safe limit. Recreational divers should limit themselves to 60-80 feet. However you can go much deeper without being crushed. The problem is nitrogen narcosis starts at about 100 feet and gets stronger with depth. It gives the diver a type of high and impairs their judgement.
I do not know where you got the idea that at 4 atmos you are unable to breath or would be crushed but that is completely wrong
60mtrs.on air.5mns bottom time.45mns to the surface.broomshead/the pinnacle.choice cave.T800Aust
I'm watching this because of a sub who killed 5 last few days
Yeah I came here coz of ocean gate accident!!
I couldn't do this sort of thing if I wanted to because I have Sickel Cell Trait.
What about a dead body.... does it react different to the pressure ?
I wonder if there were warning signs before it happened. Like seeing the glass crack and hearing the titanium crack. There likely was a “oh shit” moment and then POOF!
That and the pressure inside increasing causing their eyes to pop and their diaphragms pushes into their head. Somewhere in the middle of that, their ribs break. By that point I think, or hope, that their dead.
I'm not here cos if Oceangate.
I'm here cos I just watched a David Blaine magic show .
Good educational video for new divers. Factual educational videos are good.
Becuz of titan submersible i've been watching some kind of this video
SCUBA DIVING IS TOO DANGEROUS, HELL NO, NOT JUST WORRYING ABOUT THE SHARKS BUT ALSO THE PRESSURE IN THE WATER
Nitrox doesn't necessarily let divers go deeper, but a diver could stay longer without going into deco since they're on gassing less nitrogen at depth. Partial pressures of oxygen are typically set at a limit of 1.6 or 1.4. Max safe depths are less and less as oxygen % go up in a Nitrox mix. Going too deep with higher concentrations of oxygen can cause oxygen toxicity. Which is deadly. On 100% oxygen, the max "safe" depth is about 20ft. Crazy isn't it?
Passing 100 Meters oxygen efficiency, decreased.
Everyone here from Oceangate searches?
I learned how to free dive this year and 10 meters for me is just enough x]
Crushing pressure isnt the danger. Our bodies are mostly water and can equalize to pressures well over 1,000 feet underwater. The danger is improperly decompressing. If done incoroctly your loungs will litterly explode and your body could inflate like a baloon. Every 30 feet down is 2x the pressure at the surface. This means the air in your lungs at 30 feet will be compressed into half as much space in your lungs. Now take a full breath at 30 feet and go to the surface without exhailing...
DCS have nothing to do with lungs, your lungs will only explode if you hold your breath while ascending, DCS have bubbles in your body which needs to be removed from your body, and this is happening while you slowly ascend up and have stops between ascending, if you ascend fast while breathing nothing will happen to your lungs, you will only have dcs symptoms