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From: AntoshkaSPR
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  • I herd this Egyptian guy is a professional TECH diving trainer who got Yuri's body from 111 Mtrs im going to dahab dose anyone know what dive center dose he work for and whats his name??!!

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  • I Just watched his video-story. Its so sad man

  • Even, The pressure at that depth would be enough to kill.

  • @Killedya11 No. It isnt. Do research if you don't know what you are talking about.

  • @Imfailingphysics Actually it is.. At the depth he died in it would've crushed some of his limbs.. Scientific fact. If you go 150ft deep in any Liquid substances the pressure would be that of 500 "50lbs" weights on your body.

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  • just the fact that he is 'tumbling' his tank says enough about his knowledge about technical diving. He has no clue.

  • yea true Scbuababe20 but there are good wreck discovery/dive accident videos and stories on the net too. My favourite site is the myscubastory site. They have tonnes of real life dive stories and videos. Type myscubastory into google and its the first result

  • Just to clarify the confusion so many people hold:

    Oxygen Toxicity: When diving in a normal compressed air tank, the 20% oxygen in the tank becomes toxic deeper than 66 meters underwater. This could result in seizures/convulsions.

    Nitrogen Narcosis: Nitrogen dissolved in the blood could cause euphoria, lack of concentration, and confusion just like when a person is drinking alcohol. The deeper the dive the more "narc'ed" a diver becomes. Symptoms could start showing from 30-40 meters. 

  • For any experienced divers I have a question. Were his actions (specifically diving to 91 meters on regular air) something that people occasionally successfully attempt? Do people say "the hell with safety" and see if they can touch down at 90 meters and then inflate, or drop weights and try to surface before they get serious toxicity issues? It seems to me like this was a guaranteed way to die. Am I wrong?

  • @slunkmonky Once in Bonaire, I saw a slide presentation from Captain Don Stewart, the founder of the first diving operation there. He showed us a picture taken way back in the day before buoyancy-control (BC) vests and depth gauges. They used colored strips to indicate approximate depth, and eyeballed it. They were diving compressed air (no tri-mix then, either) and estimated they were down about 80-85 meters without incident. Probably for only a minute or two. Insane by today's standards.

  • @slunkmonky - frankly, anybody who is diving merely to make some kind of personal depth record (without teams of support personnel) is either an idiot or insane. Recreational diving is not about "pushing limits" or otherwise being an alpha-male jackass. Recreational limits are normally 40m, and below 20m is considered a "deep" dive. Diving tri-mix takes special training, and nitrogen narcosis and/or oxygen toxicity can happen even at recreational depths. Safety margins are key.

  • @slunkmonky yes. some people safley return from 155 meters diving with compressed air. but it is something no one should attempt. at aprox. 65 meters compressed air results in an unacceptable risk of oxygen toxicity.

  • he was a recreation diver ....y he did went at that depth without 3mix no idea but not feelin sorry for him if u dont know how to do somethink just dont do it .......just cant get it to my hed what make him to do it ......no expirience and no information or stupilitl

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  • Can anybody explain me what have happened? Why he died ?

  • @MrAndersohn

    like many Russian (which believe that because they have money, they can do everything nomather what), he did something very stupid. Just becasue he recently had became instructor he thought that he's now a very experienced diver (nothing to do with Trimix diving if you're Padi Instructor). So, he want t o try to decent as much as he can and to see he's personal limit (with Air, that's why he was

  • @MrAndersohn

    and here is the rest of the explanation:

    such a studpied idiot).

    Aproximetry at the depth of 61m (when he for the first time check he's the gage) he was Oxygen toxid......

    and he simply drowned. You can see he's regulate 1-2 minutes before he's stopp to move as he's mussle was not strong enough to hold the regulator in he's mouth.

  • @branosh Yeah, that was stupid.

  • @MrAndersohn when you dive beyond 40 meters (130 feet or so) you can't just keep breathing the same air you breath on the surface. Eventually you will get narcosis,, go deeper and you get oxygen toxicity. Narcosis is like being very drunk. Some 'narced' divers don't remember their dives at all. Deeper still and you can get oxygen toxicity. This can cause involuntary spasms like spitting out your regulator (mouthpiece) and drowning. The key is training and using modified air mixtures.

  • poor guy, does anyone know how long it took them to recover his body?

  • rip 

  • R.I.P.

  • I find this guy very attracting..

  • @TheNigiri u find him attractive because he recovered sumones dead body hahaha how sad are u lol

  • @stussyboys Hahaha.. right..

  • @TheNigiri u mean u admire what he did which i can totally understand takes courage to recover sumones body at that depth

  • @stussyboys Not really.. I think he's hot

  • sooo.......what was the cause of death??

  • 4:17 "its breath taking" ..not really the kind of thing you want to say when your a diver

  • can someone translate what exactly 80kg weight equipment means?

  • @vrwhitlockable 80kg = 176 pounds

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  • :-)

  • overseasmedia is awesome and knows everything..

  • @gbangerau

    Yes, Elena (overseasmedia) is wonderfully knowledgable, logical and generous when it comes to answering questions about her profession.

  • Sad to know this young man had so much more life to live, horrible way to go.

  • divin is dangerose but fun ive been diving since i was 7 i know what i am doin yuriwas also experentced but he should have known his limets

  • at 8000 meters is about 17000 ft the pressure is about 8 tons per squere inch,it will make you thinner than an paper

  • Yuri . . . . . Lipski? Didn't know that was a real last name, lol. Anyway, RIP.

  • omg..being a diver myself..

    this is really2 horrifying..

    rest in peace yuri..

  • I thought I saw what looked like a tiger shark as well, but it would have been reported that his body had a shark bite unless the shark only bit his air hose and departed..

  • ya maybe the water pressure killed him

  • it would take alot of pressure extremely suddenly... thats why when you are in a plane you need to equalize and pop your ears... your internal body pressures are matching that of the plane when you pop your ears. same thing when you dive. although, dive to fast to quick without equalizing and you can burst eardrums and crush sinus cavities. Although, in most cases breathing from a tank underwater is alone enough to equalize for the most part, because the air in the tank compresses

  • So if your standing 8000 meters below the surface, are you saying pressure wouldnt kill you?

    The body would be pulp.

  • In theory no, but in real life maybe.

    If youre beathing air at 8000 meters, there will be pressure inside in your body as well.

    But you would be killed at 8000 anyway, because of the gasses becoming toxic

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  • 70% not 90%.

  • Read on internett, and found out it was 60 %,

    funny

  • he paniced. simply went nuts because he packed on too much weight, had no one to help, and basically got dragged down to the bottom. He then got the respirator out of his mouth, and drowned. Plain and simple drowned.

  • @vladnuke... all weights are on a quick release belt that can easily be removed with a simple tug, i highly doubt that the weights were the problem as he could have easily removed them at any point.

  • @kangaroobin

    Yet something in his narcosis addled brain told him that dropping the batteries from his camera was a better idea.

    Yuri was, sadly, beyond the point of "easily" doing anything.

  • False.

  • Great imagination, dude!

  • how did he die lotan?

  • You got all the possible explanations at the very begining of the comments. Check out "Yuri Lipski" in Wikipedia too.

  • can't it be an epileptic fit coused by a mrong mix)for exemple a mix with too much oxigen..

  • possible

  • yep.. that sure is Tarek Omar

  • wait a moment judda29 he is diving 30 meters minute do you think really that a normal diving time is so fast ??? stop talking shit

    he is falling and falling at the start he was no nitrogen narcosis or something like this the only think i want to understand is why is he sicking like this ?

  • this place is warm water right? salt water? makes me wonder too why he is falling so fast

  • When your diving you have a weight belt plus the weight of all the rest of your equipment...

  • from reading up on this incident i have found that the Blue Hole apparently has a tunnel through the reef (known as "The Arch") connecting the Blue Hole and open water at about 52m from the surface.

    Its possible he was trying to get through this tunnel.

    they dont call The Blue Hole "Diver's Cemetry" for nothing.

  • The postmortem confirmed oxygen contamination in the bloodstream caused by nitrogen narcosis, common at this dive site. At the time of this dive, I was scheduled to take my PADI Divemaster course which would then make me one of the most qualified in the country (I'm now the 24th to be qualified as both BSAC IDI & PADI Divemaster in the UK). Unfortunately, the death of Yuri caused this to be rescheduled due to investigation... lucky me huh?

  • judda29, you have absolutely no fucking idea what you're talking about.

    You are NOT a divemaster, and if you are, you have got to be the shittiest one I've ever seen. Nitrogen narcosis is not "common" at ANY dive site. But above all, oxygen has ABSOLUTELY NOTHING to do with nitrogen narcosis. Please, don't talk about things you don't understand.

  • Actually, I so know what I'm talking about... The levels of nitrogen (Nitrogen Narcosis) caused a reaction with Oxygen & the Alveoli in the lungs which created a poisoning of the blood which has the same effect on the brain as what heavy consumption of alcohol has. This is probably what caused Yuri to descend at such high speed to such low depth, giving the oxygen in the blood to become poisonous due to the body not 'accepting' it.

  • No.

    Everything you just said was completely fucking wrong.

    Your statement was so stupid, and so goddamn incorrect, it hurts my head just trying to think about how you could come to that conclusion.

  • after 9 years of the accident, this is for think,should dive is for fun,if was suicide need to corage for did.rest in peace yuri

  • If he didnt die from something how come he said he saw his tanks ripped and he's stuff was everywhere ?

  • הוא מת מתערובת גזים לא נכונה ב מיכלים שלו, בצלילות כאלו צריך גז חמצן מיוחד ולא גז רגיל כנראה שהוא לא ידע את זה וזה בעצם סיבך אותו בעומק של -90 מטר איפה שכבר איפשר להינצל מהמוות.

    גם פעם שמעתי שאמרו שהמוות ניגרם מ כובד יתר.

  • yuri didnt die from a fish or shark, he died from oxygen poisoning in his oxygen tank.

  • or he committed a beautiful suicide

    it's the most painless death you can die

  • ty man if ur right that makes me feel so much better

  • I don't think so.. he appeared to be panicking.

  • drowning is far from a painless death

  • its a death of panic.

    its not a death of pain,...if you lack of air you get "high".

    ask any doctor

  • If your lungs hold 4 liters of air at sea level/1 atmospheric pressure. They can hold 44 liters at 100 meters (10 at. of water + 1 of air). There was no lack of air. He died of oxygen toxicity. The exact opposite. If you breath 100% ocygen at 7 meters. you have 3 min to live. If you want to go to 100m you can't have more than 10% O2 on your tank.

  • So?

  • @Kahuna76 Well that's not exactly true. Normally you have 21% 79% breathing gas. It's said max depth is 56 m before u have a ppO2 of 1.4-1.6. If you take nuno gomes he does 100m on 21%.

    No lack of air? He went down with 1 tank maybey 15 l. at 90m u have a few minutes. Wat about deco time? He should have taken stagebottles.

    Problem: he got narcosis, couldn"t think anymore, lost control of his self.

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  • from my experience as a kid who nearly drowned, i dont think i recall much pain, there was alot of struggle, my heart was beating so hard i was sure it would pop out of my rib cage, there was a huge sense of anxiety and panic which gave way to resignation and a sense of calm and peace...juz about time i was rescued b4 i sustain any lasting injury

  • @MPG350 At those sort of depths i doubt it would be painful like drowning in a swimming pool. You would probably be totally disorientated.

  • @MPG350

    probably one of the worst ways you can die

  • @zequelll naw dude you can actually get eaten alive by a shark or alligator..nothing worst than that

  • @MPG350 that isn't really sure in this case, at a depth of 90 metres with regular air, you have a narcossis so bad you could take your regulator out of your mouth and try to give it to a fish or something, that guy was wasted when going there alone, but down there he was already dead

  • @o10f But something was wrong by the way he descended, after analyzing, there was a serious problem due to him descending that fast, alone. I still can't grasp it. In 5 min. he was at 90M bro, lol. From the surface.

    That's not a normal dive. Something was/went wrong.

  • @MPG350 not if you are suffering from nitrogen narcosis

  • @MPG350 He didn't drown but suffered oxygen poisoning, which makes you euphoric.

  • @ItsJulieee

    How is it possible that the belt on his tank was cut,and the tank half floting?

    He could not cut it himself!

    So if a shark took a bite in the tank and pushed him down deep .....well thats plausible ?

  • @klptldn Why could Yuri have not cut his tank belt himself? Every diver that I know carries a dive knife for emergencies.

    Look at the ecology of Dahab's Blue Hole. Turtle get in there and starve to death due to the lack of food. There's no reason for a shark to be down there.

  • @ItsJulieee No he died because he had a new camera, he was setting it in 5m deep and he had too much weight and he didint realise that he was going deeper and deeper he noticed too late and he tired to fill hes bcd but he was so much over weighted that didint help, and when your in 80m it dosent matter are u going to get to the surface or are u going to stay bottom because your gonna drown or you die decompression sickness if u try to get to surface and one tank of air in 80m = 1 minute

  • @ItsJulieee like the guy underneath me said, he did not die from oxygen poisoning, yuri knew the effect that oxygen has at depth and was attempting to control his o2 intake so he did not start convulsing. At the point he hits the bottom he is negatively buoyant to the point that he cannot control his descent anymore, he is tumbling down the slope. The problem with his BCD does not appear to alarm him until it is way too late, this was his attitude to get down to the bottom and severe narcosis.

  • the fish at 5:22 is deadly when it touch you u can be dead

  • your stupid u cant die from a lion fish only unless u have an elergic reaction to it

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  • Lionfish aren't deadly, just EXTREMELY painful. I've had the experience of touching one of the spines and believe me... it fucking hurts. I could have had health complications due to poisoning from the venom if I didn't get an antidote but certainly not killed by it.

  • Beautiful, majestic.Yuri, God speed on your eternal cosmic journey. Yuri you are living your dream instead of letting the dream live you.YOUR SPIRIT IS FOREVER.

  • most of those fatal accidents occur due to the effects of oxygen toxicity and not Nitrogen narcosis alone. Narcosis can be tolerable at some point especially for those who do alot of deep air dives. However, exceeding partial pressures of oxygen of more than 1.6 ata ( 66 meters when diving on air) could be fatal, especially long exposures at this depth. which is I think the common case in the blue hole.

  • To the comment below, yep that's Tarek Omar

  • whos that guy at 0:21? is that tarek omar?

  • Yes it is Tarek Omar

  • How can i get a copy of this video???

  • By downloading it. Google for youtube video downloader.

  • Not just this segment but the entire film?

  • Oh I don't know about the entire film, but with a youtube video downloader you can at least download youtube videos.

  • thats sad...but what caused this?

  • it was either oxygen posioning or nitrogen narcosis

  • so hes at the blue hole in belize

  • No, this Blue Hole is north of Dahab, Egypt.

  • "It's breath-taking"

    Literally, apparently.

  • Why you gotta be a dick and clown on somebodies death?

  • omg, my worst nightmare, that's horrible..

  • Tarek is handes-down one of the best recovery-divers i ever met, and for sure he is the best to get there in dahab.

  • Why?

  • i was there diving... its a unique place but i felt quite unsure and scared when i was swimming on 42 meters above this hole.... its so dark, like a gate to hell.

  • i was there

  • Good. So what did you see?

  • Xoco13 and what did you see?

  • me too

  • Pushing limits is NOT condoned by any agency that I am aware of. It's one thing if you know you are in training for another level, & have better-qualified divers watching your every move as you advance through training, & another if you are pushing limits out of lack of knowledge,& get yourself killed in the process.

    Expedition divers are in a different category.

    Yuri wasn't an exped. diver, & the dive was set up as recreational. Limts were broken unintentinally, & a diver is dead.

  • danceanddive, I completely agree with your comment. Yuri Lipski was supposed to dive within his limits. He was a PADI Instructor, so his limits were from 18 to 35 meters or from 40 to 90 feet whilst he dived down to 330 feet.

  • Can't get it in one comment :-) Highest instructor ratings- Open circuit instructor in erverything except that which Im listing as a CCR diver, not an instructor here- OC Normoxic Trimix Instructor CCR Instructor (you're certified per unit) Normoxic CCR Instructor CCR Full Cave tech. wreck diver CCR Tri. diver instr./tech.certts listed =IANTD or NSS-CADS No actual limits on depth, but certifications stop around 400 Deepest dive 360-370 FSW, in training for dives to 500 FSW.
  • danceandive: What training agency you belong to? TDI, NAUI?

  • overseas media: some of us use vids like this to make diving safer. It;s called "accident analysis." I'n not being condescending; I just don't know if you realize that we take these apart & analyze each error, then check our programs & work with DAN & other agencies to improve dive safety. In the end though, as the head of my agency (& my instructor) is known to say, "Only you can think for you, swim for you, & dive for you."

    If you love diving, train/drill as much as you can.

  • danceanddive: Sorry, are you talking to me or to overseasmedia?

  • danceanddive: I know. That's I asked scubazmei to post the high res video the people could learn that these are not the sharks who kill the divers but there are a lot of divers who perfectly kill themselves without any help from seas monsters. Unfortunately I can see people are more interested in speculating about such stupid issues like giant calamaris attacks, then knowing the truthout Yuri's accident. That's really sad.

  • quickclip9, consider reg. malfunction. The wheezing "hiccup'or "help" sound is one my agency is beginning to associate with equip. malfunction. = the diver is straining to breathe.

    If he was hypoxic & going hypercapnic, his thought processes & motor control were shot, so no bouynacy control or ability to react appropriately.

    Looking at the computer may = a mechanical or panic response. He was dying- painfully.

    He didn't appear to seize.

    FYI: I'm a CCR/technical instructor & caver

  • danceanddive: Good, so if you're CCR instructor and a caver, what kind of depth you are trained to? The first thing that should be analyzed is that Yuri neither had a proper training, nor the right tech gear, nor the right gas to breath, nor the right team to dive with, and his gear configuration was disastrous. Not to mention he had "tons" of weights, batteries, lights, canisters.

  • A post by OSM- but your points are very valid.

    Correct on all the above. What often happens is that the diver is used to diving with a number of things ready to create a serious cluster, but nothing goes wrong, so they keep diving the same way. Then one thing changes (a rec.reg might fail,etc.) & the diver panics- forgetting everything they've learned until its too late to do anything. Chances are by the time he realized he was in serious trouble he could no longer respond appropriately.

  • danceanddive: Exactly! That's what happened with Yuri. He did a few dive deep dives before like 90 meters on one tank with air and thought that was "cool" and he was "safe". That was his first dive in the Blue Hole and he undereastimated all the risks related to the Blue Hole dive. Apart from what you have said above Blue Hole also creates more of narcotic effect due to its cave-tunnel structure.The diver has more chances to panic in the Blue Hole than in the open water for example.

  • We've all pushed the limits of our training, but sometimes we push them farther than we know, simply because we DON'T know. I'm in Florida, & we have a monthly body count, between the coastal waters & the caves.

    The straight drop (whihc it looks like this diver did, whether he meant to or not) would narc the hell out of him on air- definitely. Looking into nothing also throws bpeople off. I know a very good diver who came up early froma 330' due to vertigo from the open water look.

  • danceanddive: Pushing the limits is OK thing if you have an elementary knowledge of the limits which you are going to push. It looks for me that this guy didn't understand what he was doing at all. When you have 200 divers dying in one place called Blue Hole wasn't that enough to stop and think before you jump into it?

  • We pull bodies out of Florida wrecks & caves on a regular basis. I can easily think of 6 deaths that I know of in 2008, & all of them were well-trained- just not well-trained for the diving they were doing.

    Let me expand on this for my agency (IANTD):

    DIVERS SHOULD DIVE WITHIN THE LIMITS OF THEIR TRAINING. DO NOT PUSH YOUR LIMITS!

    Also, time out of water = loss of skills, to some degree. Divers need to be aware that skills practice is necessary.

    Safe diving, PMB.

  • hey danceanddive i'm about to go to classes for my scuba license, and I was wondering: how do you deal with this vertigo sense?

  • danceanddive; If you watch the high resolution version of Yuri's video, where the sound is more precise and clear, you would hear him "making nosies" at the surface while adjusting the red filter to his video cam. It didn't seem to bother him much.

  • He was an inexperienced diver trying to go deep with a single tank breathing air and having no technical experience. The 2.1 Presure of O2 gave him Centeral Nervous System Oxygen Toxicity which made him convulse and drown. You can hear the hiccup reflex from the convulsion sounding like "help". He just wanted to show off ie.. the video showing his computer at both 81 and 91 meters. He did a "bounce dive" because he didnt have the proper training nor patience to do it right, and it killed him.

  • Public apologies to overseas media. We just had a missunderstanding.

  • Anyway overseamedia you are somewhat right in saying when you venture to that depth you are a sucicider. If anyone knows how to dive knows that AIR should be taken down to a max of around 40metres due the fact the NDL states you only have 9 minutes at that depth. Also the Narcing affect starts at 26 metres aprox depending on the person. My first narcing was 30metres then after that never got it again. Every bodys physiology is different.

  • Yes, the fact that I do not have wings, is, in fact, a very good reason NOT to fly around in a commercial aircraft, which I do not do except in extreme emergencies when I must reach a distant destination very quickly. For example, for discussion purposes only, a loved one is extremely ill, and I need to be at their side quickly, just in case. Again, this is a hypothetical example only.

  • don'telievethetruth28: I spent 4 years there investigating the BH's accidents and diving the BH. And I tell you the truth: elieve it or not, there are NO beasts there. The only beast there" is human's own stupidity.

  • I see a lot of evidence of a squid attack in the actual video. You can see tentacles, etc. The fins aren't his fins, they are the squids main grabbing tentacles, you can even see them come into a side by side formation preparing for a strike, in which a struggle follows. All the comotion and struggle is the squid attacking him. A squid pulled him down from above, this is normal squid feeding behavior.

  • You're an idiot. In another film you were claiming it was a shark. He got the bends and died. End of story.

  • I may have initially posted that it looked like a shark, or something, but check out these still frames I grabbed from the video:

    picasaweb .google. com/wadefulpng/Squid

    Just remove the spaces, etc. It maybe nothing, but I have read people see squid there, and where there are small squid there could be larger squid. Especially when down around 52m there is a tunnel that leads to the open sea that larger squid could use to enter the blue hole and exit it.

  • like a climbers. bottom fever for diver, summit fever for climbers. It's the same

  • or scuba equipment

  • This person died because of CARELESSNESS....

  • Who are these guys talking the whole time?

  • jaa44: the guys who watch the video are the Israeli divers, then that was Tarek Omar (the diver who recovered the body)and Yuri's father I believe.

  • =[ it is sad.

    R.I.P Yuri.

  • is that him at 6:10?

  • R.I.P dude

  • Los submarinistas deben descender a unos 60 metros de profundidad y entonces ascender de nuevo hacia el camino que lleva a la superficie del mar. El problema radica en la orientación de la cueva, que provoca que muchos buceadores se desorienten y no encuentren el camino, de manera que siguen descendiendo, creyendo que en verdad están subiendo, hasta que terminan con una muerte lenta, provocada por la acumulación de nitrógeno que aumenta a medida que descendemos a más de 60 metros.

  • @Vixypr07 Más bien mueren por la intoxicación del propio aire, no por la acumulación de nitrógeno. La presión parcial para el buceo deportivo está en 1.4, profesional 1.6.

    nunca debió bajar solo, solo él sabe lo que le pasó :( , es muy triste ver como baja a su porpia muerte.

  • fucking moron. Have you ever been diving?? As you get deeper you start suffering from something called nitrous intoxication. It feels like being drunk and you basicly loose your ability to think straight. It's a very dangerous condition and it's probably what killed this guy. No energy direction need.

  • is it like the binz or something like that???

  • R.I.P

  • what happened to him ?

  • those authorities will never admit; but his camera caught the view on tape-1 standardized, predatory, shark feeding upon a human being. Separate footage shows, Yuri's leg fins torn to pieces with an obvious bite mark in the calf area. Gently place new ones on him and say it was narcosis; film THAT and vwa-lla; TOURISM IS SAVED FOR THE BLUE HOLE YET ANOTHER YEAR!! fuckin bastards. A fat person says, the scales don't lie-Yuri's camera didn't lie. Bottom to upper left screen of his last footage.

  • gennady28: he just "did it wrong"

  • It doesn't appear that he switched to other mixes in his descent. Even if he was still in "control" at that depth normal atmospheric O2 levels are toxic. Which could explain his apparent "writhing" around and pain. His budy only had one tank so would have been unable to "fetch" him and even if he did, it takes anything from 4 to 8 hours to deco from those depths. Looks like some preexisting medical condition incapacitated him and led to "freefall". All conjecture on my part

  • My dad was a navy tech diver, and his friends are also tech divers. So i find their opinions to hold weight. They think that somethign happened mentally where he kind of lost it for a bit and only regained it when he hit the ground and started looking at this computer and freaked out cause he was in soo much pain and was freaking out. Also They think he didn't say help near the surface, they belive its just echo from his regulator. So If anyone wonders what pro tech divers think, thats it.