Cozumel Deep Scuba Dive 400 feet - 6 tanks (RAW)

(warning - this video is NOT exciting to watch. Absolutely nothing happens, which is exactly what we wanted.) We got dropped too shallow, because of the air consumption calculations we needed to expedite to the bottom. Did a lot more stirring up than we usually do, our bad. People ask why. Have you ever looked down, further than you were supposed to go and wondered? Me too. Well I haven't found any monsters yet, still looking down and wondering what's further down.
6 tanks, 10 minutes to get down, mandatory 2.5 hours of deco to get back to the surface. We go through the reefs and see the pretty fish and coral on the way up.
Mixes
10/60 (2 tanks)
18/40
40/16
55/00
100
One rebreather

[@mowthatlawn5422]

Here's some cave diving in CZM , it's more exciting to watch. www.dropbox.com/s/utzog5gdu44r8w1/CaveDivingCZM2015.mp4?dl=0

[@davidkey6145]

Link has been deleted...

[@radiolycanthropy5601]

Yep. Link is dead. Any chance of reuploading?

[@killernovapvp8788]

Hey, what training do you need to go down that far? I have my open water and I am about to do advanced but I am 11

[@GoatyHerps]

Dear Viewers, Please understand this depth requires tons of experience and planning. Don't be that dude who takes one tank and does this as his first dive after cert.

[@TheJoeyboots]

Not me. :D

[@danceworld8360]

I dove near this...I only went 70ft down but I remember seeing the shelf dropping into a dark blue void...creepy

[@counterterror101]

Then it will his last dive after certification

[@greg4172]

I think 30 meters is deep enough for me

[@hugomendes2578]

Dead at 80m probably, if narcosis doesn't make you kill yourself first, PO2 will do the trick.

[@stephrc6647]

i love the way the slope just keeps going and going just shows how amazing this world really is.

[@davidkey6145]

and that's what keeps begging me to go deeper, see what's down there. Contact Deep Exposure in Cozumel if you want to go deep.

[@wallybrown9509]

Steph RC flying like Superman down the mountain.

[@richardmiller191]

Great video Dave! Thanks for posting. Glad you made it ok. I dove there in the late 60's with my dad when I was only 13. We were on an excursion with others and we went down past 200' We estimated 230' Our Aqualung brand depth gauges only went to 200. Just one tank. My dad and I were the only ones who went that deep. The others stayed about 170 or less. I wasn't as scared as I should have been. We didn't have enough experience or training to go that deep. Looking back as I got older I realized how crazy that was for us in that situation. One of the guys in the dive franticly dove down to us and freaked out signaling us to go up right away. He said when we got back he was afraid we were never going to come up. He saw us just keep going down. My dad said he just wanted to get to the next ledge and then we were coming up. Nitrogen narcosis had to have set in. I felt kind of like I was dreaming. Interesting experience but I'm not thrilled my dad put our lives in jeopardy.

[@davidkey6145]

when i was younger i went too deep on a single tank too. Foolish when i look back. Sounds like you guys got a good buzz, glad you made it.

[@highlight4740]

was that single tank nitrox?

[@richardmiller191]

@@highlight4740 No it was just a standard air tank

[@MikeWaltonVideos]

Thats insane, how did you not get decompression sickness?

[@richardmiller191]

@@MikeWaltonVideos As I remember, and it was a long time ago and I was only 13, we only did that one dive that day and using only one tank we didn't need to do decompression stops. No dive computers back then (1969). Had to figure it out on your own. But you are so right that was insane. At the time I thought "how cool", now im like WTF were we thinking!!! Definitely my most memerable dive. Things were so different back then. Took 3 vacations - Virgin Islands, Florida Keys, and Cozumel and never once saw a shark!

[@mowthatlawn5422]

DIVE PLAN Decompression model: VPM - B Surface interval = 5 day 0 hr 0 min. Elevation = 0ft Advanced configuration settings in effect. Critical Volume = ON Dec to 200ft (3) Trimix 10/65 66ft/min descent. Dec to 400ft (6) Trimix 10/65 66ft/min descent. Level 400ft 3:56 (10) Trimix 10/65 1.31 ppO2, 104ft ead, 119ft end Asc to 320ft (12) Trimix 10/65 -30ft/min ascent. Level 320ft 1:00 (13) Trimix 10/65 1.07 ppO2, 79ft ead, 91ft end Asc to 260ft (15) Trimix 10/65 -30ft/min ascent. Level 260ft 1:00 (16) Trimix 10/65 0.89 ppO2, 60ft ead, 70ft end Asc to 250ft (16) Trimix 10/65 -30ft/min ascent. Stop at 250ft 1:00 (18) Trimix 10/65 0.86 ppO2, 57ft ead, 66ft end Gas Switch Level 240ft 1:00 (19) Trimix 18/45 1.49 ppO2, 95ft ead, 117ft end Asc to 190ft (21) Trimix 18/45 -30ft/min ascent. Level 190ft 2:00 (23) Trimix 18/45 1.21 ppO2, 71ft ead, 90ft end Asc to 160ft (24) Trimix 18/45 -30ft/min ascent. Level 160ft 2:00 (26) Trimix 18/45 1.05 ppO2, 57ft ead, 73ft end Asc to 140ft (26) Trimix 18/45 -30ft/min ascent. Level 140ft 2:00 (28) Trimix 18/45 0.94 ppO2, 48ft ead, 62ft end Asc to 110ft (29) Trimix 18/45 -30ft/min ascent. Gas Switch Level 110ft 1:00 (30) Triox 35/25 1.51 ppO2, 39ft ead, 74ft end Asc to 100ft (31) Triox 35/25 -30ft/min ascent. Level 100ft 8:00 (39) Triox 35/25 1.41 ppO2, 34ft ead, 67ft end Asc to 80ft (39) Triox 35/25 -30ft/min ascent. Level 80ft 8:00 (47) Triox 35/25 1.20 ppO2, 24ft ead, 52ft end Asc to 60ft (48) Triox 35/25 -30ft/min ascent. Gas Switch Level 60ft 4:00 (52) Nitrox 50 1.41 ppO2, 26ft ead Asc to 40ft (53) Nitrox 50 -30ft/min ascent. Level 40ft 15:00 (68) Nitrox 50 1.10 ppO2, 13ft ead Asc to 30ft (68) Nitrox 50 -30ft/min ascent. Level 30ft 15:00 (83) Nitrox 50 0.95 ppO2, 7ft ead Asc to 20ft (83) Nitrox 50 -30ft/min ascent. Gas Switch Level 20ft 14:00 (97) Oxygen 1.60 ppO2, 0ft ead Surface (98) Oxygen -30ft/min ascent. OTU's this dive: 127 CNS Total: 68.0% 125.6 cu ft Trimix 10/65 49.8 cu ft Trimix 18/45 48.9 cu ft Triox 35/25 53.2 cu ft Nitrox 50 16.3 cu ft Oxygen 100% 293.8 cu ft TOTAL .

[@KevinEontrainer381]

Wow, diving is a real complicated stuff... I thought all you had to do is to gear up and dive.. And make the "OK" handsign...

[@davidkey6145]

@@KevinEontrainer381 haha, its not complicated if you don't push the boundaries. If you want to push, then you need to do your homework and follow the plan, no exceptions, no excuses. After you learn how to do it then software (vplanner) will do most of the work, that's what you see in the post. Write it down on wax paper and follow what you wrote down, dive the plan. Computer on your wrist is a back up as well as your buddies. Most dive profiles are go straight down then come up slow, its what depth to stop at and how long to stop thats important. On tje way up we have fun going through walls, swim throughs, reefs and so on. Its simpler than it looks and Deep Exposure in Cozumel can teach you.

[@travishough3989]

What was your gas bill for just this dive you estimate?

[@charlesg7926]

@@travishough3989 More than your mortgage

[@juantorres9636]

@@charlesg7926 Haha, no kidding. Although this dive was 7 years ago, so the cost of helium was much lower then, also, from what I’ve seen the cost of helium in MX is much lower than in the US and the EU 🤷‍♂️

[@Normie_dog]

Makes my stomach turn.....never even close to that depth, surprised at how much light penetrates to that depth....

[@shroomzed2947]

It doesn’t take much longer for it to become much darker though. Photosynthesis doesn’t happen below 150 m.

[@yungog2o3]

I’m surprised they didn’t get decompression sickness you have to be a real pro to dive pass 300 ft let alone 40

[@DickyChap]

I didn't find it boring, I thought it was really exciting! I've also got the Shearwater. Brilliant dive computer.

[@incatm0]

It makes me relaxed and calm

[@kenmh7357]

I dove this sight last year, but only to 100 ft. Glad you did this guys so I don't have to. Great video and great job.

[@flamimgo2525]

U guys didnt encounter a reaper levaithan right?

[@davidkey6145]

haha, still looking for it, just a little deeper I suppose...

[@flamimgo2525]

CodyLLC the deepest point where reaper leviathans are is in the deep mountains, which is about 450 meters deep

[@masterjames2627]

Epic

[@dshizzlelongway9981]

Idiot their 400 feet not 400 meters American

[@TrickyGunzz]

Dshizzle Longway he’s talking about the game Subnautica not the video fuckwit

[@josemanuelcarvalho6413]

excellent movie, I'm training for my TECREC 65, so seeing you guys pushing the limits, really inspiring!

[@ellajury6101]

this is the most relaxing video i could watch this for hours

[@WeBeYachting]

Great video, thumbs up from us and cheers from sunny IGY Simpson Bay Marina, Sint Maarten in the Caribbean.

[@seanfactor4009]

WOW.... Can’t wait to get to this level and be able to go explore the depths like that.

[@NexusGuru]

121 meters is pretty deep glad you guys were able to make it

[@kaylerdjs]

... I love the fact of descending thru the slope, somehow it feels more interesting and safe. Good video.

[@tommyd4784]

never been down farther than 95 feet. This is crazy, the clarity, the fact that the light still goes that far down and the fact that you can equalize your ears at that depth!! AWESOME!

[@davidkey6145]

all the ear work is before you get to 60. the light looks like it will be gone but just keep going and either the light is still there or our eyes get adjusted or both so far.

[@chookchack]

Oxycheq!!! i love that wing. Nice vid.

[@repeatitwithme4481]

I found myself holding my breath lmao. It takes a true badass to make a video like this! Thanks gentlemen

[@deathinthedark5451]

When I got certified I had to force myself to take my first breath underwater 🤣

[@greg4172]

Don't hold your breath. Your lungs might explode

[@ScreamingElectron]

2.5 hours of deco...god damnnnnnn This is awesome, I hope to do this someday as well and survive.

[@skyking6989]

awesome video I'm just a rec scuba diver seriously considering going the tech route. Bravo sir👏

[@mowthatlawn5422]

I'm the guy that thinks IFR flying kills the fun of VFR flying. I don't tech dive for the fun of it but because I have to. Now I have plan my dives, check the types and percentages of gases in my tanks, put on at least two tanks on the sides or back, spend a bunch more money per dive (have you priced 7 regulators?), have to have my own equipment and tons of it which I drag around on flights hotels beaches boats rinse it and hang it all to dry... diving is work now when it used to be play. What was a simple excursion now takes all day and forget doing it with anyone you know including your family (they're not crazy). I have to go deep or go into a cave now. I wont go on a single tank dive anymore, its not fulfilling. My advice, stay light, stay cheap, keep it fun, maybe a mask and rent the rest. I think tech divers do it because they have to. After you have a couple hundred dives you'll know if it's still working for you, know you likely wont come back from tech diving and it's not for the fun, or the fish or the coral that I do it. It's for the excitement, precision, discipline and mission. And there is no depth that is enough that's all bull although you'll tell everyone a certain number, you're lying to them and you know it. Tech diving is like IFR flying it's not just for fun anymore...

[@skyking6989]

David Key awesome points funny you said IFR vs vfr flying as I'm considering getting pilots license as well 😀

[@mowthatlawn5422]

10K for VFR 10K for IFR, for me IFR is not worth it unless you're going to fly at least twice a month and stay current. IFR is a life change, VFR is for fun.

[@skyking6989]

David Key thanks for the killer tips!

[@mowthatlawn5422]

Here's some cave diving www.dropbox.com/s/utzog5gdu44r8w1/CaveDivingCZM2015.mp4?dl=0

[@MikeWaltonVideos]

This is literally the complete opposite of climbing mount everest

[@AchillesofAchilles]

Thank you for raw footage

[@LivingWalks]

We've just filmed a long natural sight and sound gopro walk through the town and beach but we didn't get to see Cozumel underwater, so We enjoyed watching your underwater footage very much and love the fact that as you say nothing much happens) very restful. Thank you for sharing it.

[@davidkey6145]

This isn't a good video for what's available in Cozumel underwater. Cozumel has a lot of life under water and this video doesn't show it.

[@bigdh2os814]

I enjoyed the vid, thanks! I find it amazing how some people post crap comments on here? Must be more closed minded people out there than I thought. May your dives be great and all return safely.

[@davidkey6145]

Scuba is a funny sport, it takes almost no physical ability and it's not at all physically demanding. I don't even think it should be called a sport but never the less it attracts self appointed experts and keyboard bad-asses for anyone that can swim and breath. You don't even have to be a good swimmer so that leaves the only thing you have to do well is breath. Most people got that down by the age of one. Other than that a moderate amount of knowledge and the ability to follow a dive plan without excuses. It's such a low physical skilled activity they want to make it bigger and more difficult than it really is. If you can follow rules and breath and can kind-of swim, a little more than a descent dog paddle will do, you have all it takes to be a great scuba diver. They see an easy hill to take so they take it and claim superiority, the beta male formula. Interestingly enough I haven't seen any beta males at 400 feet yet nor have I seen any an hour from the entrance in a cave underwater. Those are the Non-Beta Zones.

[@bombousboy]

Well done. Good video. I'll get there one day 😁👍👌

[@xvor_tex8577]

Watching this while reading '20,000 leagues under the sea' puts a new layer to the book

[@TheJoeyboots]

Wow nice dive. Well done!

[@nes.torfernandez]

I was ready to talk shit about going that deep to see nothing then I change my mind when I read the description and see how we’ll explained everything was even the gases 👏🏼👏🏼👏🏼

[@maxlongo306]

Nice dive guys. Congrats. I like Tech Diving too. My training limit now is 200 feet. Normoxic Trimix Diver. On the future my plan is to go Full Trimix Diver. I hope soon. Regards from Brazil. Cheers.

[@davidkey6145]

That's where we started.

[@ivoryjohnson4662]

Awesome dive it felt almost like I was there

[@RR-pw5nb]

I dove for a couple years, and the deepest we ever went was about 70 ft in Lake Michigan on a wreck dive. Surprisingly good visibility (about 60 ft or so) but it was SO COLD, about 48F on the bottom. You could actually see the thermocline as you passed thru it at about 20 ft.. The day we did the dive it reached 104F in Chicago. I was so cold it took me the rest of the day to warm up. This dive creeps me out just watching.

[@morrisd9]

that's really cool. Went diving in Cozumel a few times a year all through high school and a little bit afterwards. I've always wondered what things would look like if you dropped over the wall and kept going down.

[@davidkey6145]

they are all different. Some of the walls just keep going as far as I can see and I keep going deeper. We missed where we wanted to go on this dive so we ended up on a dead part but some of the walls are full of coral life and fish life all the way as far as I can see. It's amazing.

[@argonthesad]

I've just read The Last Dive and so this isn't boring, it's actually terrifying.

[@moebius117]

You were probably diving with Deep Exposure Dive Shop. I recognize Don's rebreather.

[@matthewdavis6403]

Damn this is awesome, im no where near skilled enough to do this yet but cant wait looks so relaxing

[@davidkey6145]

the more you go the better you get, like anything else.

[@matthewdavis6403]

@@davidkey6145 yeah I'm just smart enough to know im not experienced enough yet haha baby steps

[@danejablonski9073]

Your breathing is really good

[@BlueHorizonDiving]

Looked wicked dive

[@antonioaguilar3257]

Bad ass! thanks!

[@wallybrown9509]

Awesomeness

[@RiggingDoctor]

That wrist computer is cool! Last time I went diving it was all analogue gauges and plastic time cards

[@davidkey6145]

the gauges don't work for this kind of diving. these things tell us a lot more than the gauges do. We plan for over an hour for each dive not including the equipment prep and mixing gases. A friend said that someone could dive just the gauge and it should work. As far as plastic time cards go, we have plastic paper in our wetsuit sleeves that is used on the way up. Shows each stop; depth, time and gas mix we should be on.

[@davidkey6145]

and let me guess, a crotch strap on the BC

[@wallybrown9509]

That’s badassery

[@johnmiles1529]

Awesome!

[@douglaspinsak1246]

Wow that's crazy. Deepest I have been is 135 feet. I don't think I would ever want to go below 250ft, even with all the proper equipment.

[@bmcadventures]

Cool Dive..

[@outdooroutpost6061]

Everyone is impressed by the depth I’m impressed about the camera he is using at that depth. What housing are you using ? Lol

[@classifiedsincebirth]

Damn...that would terrify me being that deep. I did make it to the bottom of my inground pool, the deep end!

[@charliedallachie3539]

I’ve only cruised to Cozumel, is this the deep area between Cozumel and mainland Mexico?

[@elmago8268]

I hope I can do this someday this is very beautiful

[@danedavis5098]

Really enjoyed this video. I've never been past 130 feet and always wondered what actually happens vs the textbook

[@davidkey6145]

Dane, it doesn't feel very different at 400 than at 100. A major consideration is volume or consumption per breath or commonly understood as per minute. At 400ft you use 11 times the volume as at the surface and you don't want to run out of air. Also offloading the nitrogen by ascending slowly which is covered pretty well in basic courses. With Trimix you can change a lot of the parameters; if we go lean on Nitrogen then we can lower our equivalent narc depth, which we max out at 70ft, so we're not all narced out. We can go rich on 02 when we are off-loading (coming up) so we bleed the nitrogen out faster. We can also push the toxic levels of the gases further away by leaning them out. The difference between dives to 100 and 400 could be summed up in deeper dives have a lot of planning, math, calculations and discussions about them amongst the team. I like to fill my own tanks too and I'll use 6 on one dive. Dives to 100 you may spend a two minutes discussing it then jump in breathing whatever's in the tank Jose gave you.

[@R811k5]

glad everything went well

[@grigorgeo]

very nise video perfect i like and yior petrel perect

[@skeeterchiggins]

That is crazy. Cool but crazy lol

[@jasleenarora5655]

Awesome!! Can someone please tell me which underwater camera has been used?

[@davidkey6145]

GoPro rated to 250ft but it worked deeper than that.

[@stevecrane1125]

Great video. Glad you posted your dive plan. I am TDI Advanced Trimix and would love to do a deep dive like this in warm water. The last deep dive I did was on a wreck called The Kamloops off Isle Royale in Lake Superior. We did the dives in July and the water temp was 36 degrees top to bottom with no thermocline.The wreck is in 270 ft and lots of amazing stuff to see. I have been to Cozumel 3 times in the last 6 months and had a blast diving.

[@jhkleinberg2]

Very cool Very technical dive. I'm surprised that everyone's gear is not setup to be streamlined. Would make for a much easier dive. You could tell just buy watching the lead guy, kick and kick and kick some more.

[@dhakaboy1]

Was it Nitrox diving. Any video of your ascent back ? What did the pressure like at 400 ?

[@katieo5534]

This was so relaxing to watch! Was neat to see the light changing, and when the camera was showing the watery ceiling :) It looks like you guys had fun! How did the pressure feel?

[@davidkey6145]

You can't tell any difference but the deeper you go the faster you go deeper. The effect is that the bottom sucks you down to it, so add air to your bc often or you'll blow past your planned depth.

[@user-ed7si9no7i]

What do you see at that depth? I'm thinking it's more the challenge of a six tank techical dive. That's fine if that's what your after. Just looking for the truth for this type of dive.

[@euphorbia8106]

Im a free diver but I also like scuba diving, lets you see the underwater world more.

[@davidkey6145]

id love to know what you do too. how deep can you go? The idea of NOT having something to breath makes me want to breath. I can probably go to twenty feet as long as I can push off the bottom to come back. I've tried to remain cool on the way back up to the surface but there's something about not being able to breath that makes me scramble to the top as fast as I can.

[@arnoldstollar5375]

Surprised by this coral damage at Cozumel. Warm water and clear water, clean water.

[@shaun1040]

That is a stupidly insane of tanks holyyyy. Imagine trying to walk on land with all that kit, flippers included 💀

[@tudor2381]

Beautifil!

[@Flyingwalrus42]

Talk about balls of steel

[@NiTr091]

How does the breathing feel compared to 20-30m?

[@aaronbaker9253]

What dive center did you use... ???

[@ivoryjohnson4662]

What gear do you use reg wing backplate

[@cumdemon9895]

Where do you get certified, I live in California but haven't been able to find a place that offers technical rebreather certification

[@davidkey6145]

don at deep exposure in cozumel

[@robsenz.]

Ok just started watching, and will continue to do so after this, but how can you do this gloveless? whats the temp down there?

[@davidkey6145]

when people wear gloves in CZM it makes me wonder why, please don't touch the coral. It's not too cold, most tech guys wear hoods because breathing helium in the mix makes you cold.

[@davidkey6145]

UPDATE they no longer allow gloves or GoPro sticks. Good idea.

[@ramjet118]

Can you describe any physical changes you felt or noticed after the dive. ie..Narcosis type stuff? Awesome feat. Great job. Glad you are safe at the surface.

[@mowthatlawn5422]

Besides feeling a little lucky when you get back to the surface, there were no changes, unfortunately our equivalent narcotic depth is 80ft or so, there's no getting narked. You'd be better off on air going to 150 if you want a good buzz. There are things to take note of, the deeper you go the faster you descend. So once you're deeper than 250 you might want to get a hold of your auto inflator and start putting air in your wing or you'll fly past your planned depth.

[@PM-bl8gl]

Regarding Yuri, it was also a matter of experience and equipment....

[@eriknodland8352]

That actually isn’t true, the greatest pressure change is in the first 30 feet, the deeper you go, the less your wing compresses per foot, so if you are neutral and descend, you will be less negative then if you do the same thing at 10 feet. The difference, it takes you longer to notice those changes, and it creeps up on you more, so I agree that you should stay on top of it the deeper you go.

[@alenbecirevic1374]

Cool

[@schmithjagen7228]

Im curious how long do you guys go in the decompression chamber after dive like this? Or you dont?

[@RickC_]

You do not, All of the deco is in the water. (Unless of course something goes wrong).

[@skydiver1013]

What blend of trimix are you breathing at 400 feet?

[@yourgrandmasalzheimerpills1143]

How long was the decompression stops?

[@dougm659]

Must be a pretty impressive camera to cope with those depths?

[@davidkey6145]

gopro can do it

[@zarmril]

2.5 hrs of deco holy shit. And your air nitrogen ratios are insane. Dude, I could never go that deep.

[@benmac7315]

Riley Zarm its oxygen and helium at those depths.

[@zarmril]

How about you read the description.

[@benmac7315]

Riley Zarm what about it those ratios are oxygen to helium as I said

[@davidkey6145]

Our END (equivalent narcotic depth) is about 119ft, meaning we only experience what anyone would feel at 119ft. We do that by lowering the percentage of nitrogen in the gas(tanks). in other words we're not narced, although I continually petition the team for a END depth of 130 or 140 so I can have a little more fun. This was taken from the Plan, so at 400 we had an END of 119 and at 240 we had an END of 117. That's as narced as we got, not at all. Level 400ft 3:56 (10) Trimix 10/65 1.31 ppO2, 104ft ead, 119ft end Level 240ft 1:00 (19) Trimix 18/45 1.49 ppO2, 95ft ead, 117ft end

[@jellyabramovic386]

​@@benmac7315what at 300 meters?

[@asecret900]

All these years later... I really hope the OC dude with all the stage tanks has learnt how to use fins by now lol :)

[@dragonflydolemite]

Thats crazy

[@nolanolivier6791]

Someday...

[@BanksHD]

this is damn dangerous 😯

[@kmandvr]

And stupid!!!!!

[@davidkey6145]

life is terminal

[@carlwalker3557]

Behold thou art some crazy dudes. Evidently secure to know your melons won't implode. Thanks but I'll stay above 100. And so down there in the Abyss no doubt an alien craft appeared.

[@juantorres9636]

Super interesting video for those who are interested in technical diving. I have two questions: What is your SAC rate and how much did you consume of your 125 cu ft Trimix 10/65 during this dive, specifically at 200+ ft? I assume you had doubles of the 10/65? How thick was your suit? Is neoprene useless at 400ft?

[@alexwesker7024]

What camera did you use?

[@BE-hv6if]

It's interesting to see how this compares to Subnautica lol, the gradual "shelfs" as you drop down different depths

[@Freehotdawgs]

So cool, I would love to do some tech diving some day. What kind of camera are you using that can go that deep?

[@davidkey6145]

You could say I'm a GoPro waterproof case tester. I've used cast metal cases before but the gopros change so often that it's cheaper to just dive their waterproof case.

[@Freehotdawgs]

@@davidkey6145 can the ubersuit gopro case survive 400ft deep? I know it's only rated to go 196ft deep. I've brought mine to 160ft and it was fine, but I don't know if I would be willing to try it out at greater than 200ft depth.

[@davidkey6145]

@@Freehotdawgs it did for me. I put a little silicon on the rubber, not sure if it helped or not.

[@MethosFilms]

Hello there. What computer do u have on? Seen u look at it at start of dive. 😎

[@benmac7315]

SV Methos shearwater petrel or perdix I think, cant make it out for sure on my phone

[@davidkey6145]

Sheerwater is the brand I forget the model they've got nicer ones out now.

[@simunator]

this is wild. i can't wait to get my deep specialty

[@davidkey6145]

Deep Exposure in Cozumel can do it for you.

[@hugomendes2578]

deep is from 18m to 40m max.

[@itsme-gm9oi]

I tried scuba diving on holiday in Gran Canaria. I found it quite scary. You need to have a calmness in you to be able to scuba dive

[@davidkey6145]

It's best to be comfortable in the water, you'll get that just takes time in the water. Also what's going to happen will happen whether you're panicking or calm about it so chill.

[@charlesg7926]

Yeah if you’re a spazz then don’t dive

[@itsme-gm9oi]

@@charlesg7926 says the idiot coming out with childish comments that say more about you then scuba diving

[@Benjamin-ii3ke]

How long did it take to plan this dive

[@davidkey6145]

The software will do it quickly but then you have to get three people who are betting a lot to agree on the deco stops. That means going back through and adjusting the stops. There's a link to the plan on one of the comments. It takes longer to fill the tanks with the right mixes, label and load them.

[@provishky]

You are killing the immersion with the music.

[@scubadiver8770]

What underwater camera do you have?

[@davidkey6145]

gopro, they work past their rated 250ft

[@carlosliceaga7086]

chamkanaab side?

[@anthonylargeanus9401]

Great video. Couple of questions: 1) what wing/harness/backplate system r u using 2) which computer is that (shearwater?) 3) which course teaches you to handle more than 1 stage 4) what skills are most important to master (or near master) prior to doing a tech course? (I.e. advanced nitrox and deco procedures) 5) how do you pick a good tech instructor? Thanks guys

[@davidkey6145]

2 shearwater 3 TDI but i did them all at once cant remember which one. 4 boyancy, disipline and no excuse be at the exact depth youre supposed to be when youre supposed to be there. 5 call Don at Deep Exposure in Cozumel

[@davidkey6145]

i want to answer 4 differently by stating the differences between rec and tec diving since i don't know what your skills are or aren't. rec is got drunk the night before because youre on vacation, 5 minute of planning on the boat before you get in, check for a figure near you every once in a while. You've probably been dropped in a place you cant go too deep. check your depth and air every once in a while and do things to have fun and make it enjoyable. tech diving, didn't get drunk the night before, instead hydrated (because some people say it helps with deco issues and they could be right) instead, two hours of planning with software that does all the calculations for you with team to discuss strategies, bail outs, strengths and weaknesses of the plan so everyone is on the same page. leave early in morning to fill your own tanks with the right mixes (one to two hours) best to mix your own gas because your life depends on it. drag all the tanks to the boat, that can be a lot of tanks of there are two deep dives with three people. If we're six a piece that's 18 tanks for the first dive unless a rebreather is on the team, could be 9 more tanks for the second dive. the next difference is putting all the equipment on, it can take a while and you dress warmer so it can get uncomfortable quickly with hundreds of lbs on you. when you check your buddy you look at their eyes because its a more serious and meaningful buddy check. if you're at the deep part you don't get separated. in your head you keep track of everyone and where everyone's gas is. in tech diving you don't have to find something to do for fun, tech diving is the fun, it's serious and it's fun. The ascent part looks like most rec deep dives, its darker and we do gas switches but we are in the coral or coming up a wall and may see rec divers after a couple of hours.

[@Baderbq]

👍🏼👍🏼👍🏼

[@kevingumfory]

I wonder if if you guys know s rutherford ?! I cannot understand how you could not... I wouldn't be surprised if he were in this episode.

[@johnbenjiebarnuevo1489]

💗

[@AxolPiezz]

Warning maximum depth reached

[@davidkey6145]

that's what we tell our families, but we'll see.

[@dmcfence]

Awesome dive. Which wall was it Santa Rosa? Any huge Lionfish or Goliath grouper? Great vid inspires!!

[@davidkey6145]

we are always hunting Lion Fish. A few years ago they were everywhere. I think the hunters are making a huge impact. We really didn't see many this year or last year.

[@davidkey6145]

we hit Palancar on the way up but start the dive further away from the shore.

[@dmcfence]

Nice. Do you dive with deep exposure? I dive with tres pelicanos (rec) since I am not tec.

[@davidkey6145]

Yes that's the only place you can get helium on the island, the rest cater to rec diving.

[@aladywilliamsaw]

I wonder are sharks sitting back watching like look at these fools 😂😂😂

[@davidkey6145]

I wonder too and I go down deeper to find out, so far no sharks or sea monsters waiting down there.

[@squidneythesquid2487]

David Key sharks are beautiful babies that are a joy to see when you dive my dear dude David

[@phillipborbon6598]

got my advanced scuba last year and want to follow your route, i read on one of your messages that the max is 330', ive seen others go 500' how is this possible?

[@davidkey6145]

no real max has been identified yet as far as the human body goes. with different gasses and different strategies deeper is still available to those who have the wonder, desire and means. different organizations have different certification numbers for liability sake and training sake, different certifications have different maxes, 330 is TDIs max depth. That's all they'll certify you to go. Certification has nothing to do with what's capable, it has to do with what you're trained to do, any deeper and you're not trained to do it but that doesn't stop most, I swim and I haven't been certified to swim. If you have the formulas and the balls then you can go as deep as you like and remain somewhat safe, relatively speaking. You can take precautions to be safer. At these depths you have to pick strategies and theories to do the math that you're betting you life on, you can no longer rely on concrete answers. You're at the edge of knowledge as well and it's forming around your dive. If you don't make it your data will be recorded, analyzed and aid in substantiating one theory over another or in the formation of a new theory. There are people who do 400 on single tank of air. Ask how's that's possible with regards to nitrogen and volume... I can't make their dives work on any formula. I also don't recommend doing them.

[@22shrimps]

This is really good footage. What kind of camera are you using? Also, love the calm music in the beginning.

[@davidkey6145]

GoPro 5, says it's good to 250 with the plastic case but it works further than that.