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Why is it so complicated for humans to remain underwater? First person to invent human gills is going to be a billionaire! 😂

The Halcyon LED+fresnel lens combinations are really lovely. One more generation's worth of battery miniaturization and heat management, and I think we might have the perfect spotlight-even in a pure handheld config. The lockable/full external switch is also quite handy...

Watched this video and consequently went down an absolute rabbit hole between the cave itself, and the MIT article about your use of hydrogen in your last dive. Incredibly fascinating, you have me at the edge of my seat sir and I have never even been cave diving. Cannot wait to see what you accomplish in that cave in the years to come. Best of luck.

Firstly from information I have read online this cave is not open to any old certified cave diver right? I can imagine yourself and Agnes had gotten special permission due to your expertise? Or am I completely wrong and the cave was reopened? Secondly this footage is really incredible. I would say even rare which makes me believe its still not open to regular cave divers. Would really love to use some of this footage to show what the inside looks like for a story I am working on, no problem if not though. Stay safe and keep up the awesome dives( although based on your last upload you are doing a lot more than just diving haha)

Cool 😎

Could you clip the mouth piece strap around the back of your head with a quick release style clip (pull hard and it unclips)?

What was the cost of such an expedition? Where the hell you take all theese money from? Or was it sponsored in any way? Just curious.

❤

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Hello, thank you for your video, not much people talk about all theses lamps. I want to buy a new lamp for dry caving, and the Phaethon looks very good. In fact, Argolamp with 21700 has 41% more capacity, but i think for the same mode, it is less than 41% in terms of duration, so less efficient maybe... And Scurion don't use universal battery, big problem in my opinion. I wish you greats explorations !

great watch, that cave is beautiful!

Question:what kind of wrist watches do divers use(not dive computers) You and the others Do you guys ever wear g shocks?

I love you guy! 😅 You’re just doing the necessary.

So it arises that there is an absolute limit of diving with lungs and gases which is around 300m? What about hydrogen then?

First human being who took the effort to explain in a way, so I understand all critical details 👌

This is amazing video for who are curious about the Trimix concept. Thank you for sharing

I am not sure I know anyone that races cars and is also an avid scuba diver. It is an interesting combination. I think I would have to go for a dive just to relax after a race like that.

Very good..Dr.Harris enjoy and take care.🎉🎉🎉

In a past life I drove minis in club events and this brings back very fond memories. I'm intrigued by what the phone on the dash is displaying? Is it lap/delta times?

Very cool I like the car🙂

Absolutely the best cave diving video on youtube. This cave captures my imagination like no other cave.

I've got a bump helmet from airsoft that's the same style as the Scubapro. It has mount points with its dual strap system that should be perfectly aligned for the mouthpiece strap. Why not connect the mouthpiece strap to the helmet straps?

This video is amazing. It is exactly the kind of thing I wanted to understand since I heard you were diving on dual rebreathers

Looking int CCR as well. Most likely next year either KISS OR HOLLIS PRISM 2

Thanks for the review! Did you ever try the meandre technologie helmet light?

I dive and use the APD unit w/gag strap. The way it is designed it wraps around the back of your neck instead of your head, it also has a clip on/off. No issues diving with a helmet either, good luck

Thanks for being awesome 👍🏻 really great videos

Can anyone explain why heating batteries are dropped around 10:25 ? Are they not rated to the depth to come??? Or swapped for fresh batteries and retrieved later?

Incredible Harry. Interested to know if use analog spg, transmitters, or both, on your oxygen and dil?

This is fascinating, and presented in such an accessible way that it feels far more retainable. Did you perchance create the video(s) discussing the gas density issues and distinctions been nitrogen and helium decompression?

Great explanation on the differences and specs to look for. Habe you had any experience with GRALmarine lights so far?

Hey, love all of your videos, and thank you for sharing with all of us. Very incredible stuff. Hopefully we get a video about your awesome Hydrogen dive? Can’t even wrap my tiny brain around that incredible feat. Thank you for sharing your world with us.

Thank you for this video

Room service wait a menu that's gas

Any plans to go back to the Pearse any time soon? I think about this dive all the time and I'm not even a diver, I just find it so fascinating. And of course we're all looking forward to another habi-chat.

As a person who has done some diving requiring deco and having watched some of your vids, One question if I may. When in a habitat for an extended time, CO2 can be scrubbed with sorb which Craig demonstrates in one vid, but does the nitrogen being exhaled become a problem after an extended time. You guys rock. ( I have had the privilege of meeting Craig on 2 occasions)

are you guys still alive and not drowned yet?

I just bought my first ccr, a Meg Tiburon, and am super excited to start learning and diving it. I'm happy that you put together these great videos considering your medical expertise. I've been diving since I was 16, now 42, and have become much more acutely aware of subtle cues of narcosis around 30m. I've now more interested in trimix to dive safer and not push it. Also, congrats on your recent hydrogen dive!

What's that mule-o-matic thing for? Haha

Hi Richard, I love the information you put out on the problems of deep diving. Do you think it would be possible to put out more information on gas density and how decompression is affected with helium? I feel like this topic is not covered by many and is something most people will not even of have known existed. Thank you, you videos are truly inspirational.

Me and my wife are watching this video wondering, if the habitat some how got a punture in it if it would implode👀

what are you breathing on deko inside the habitat?

Are there any eccrs with a manual system installed as a backup? In cas ethe electronic fails.

What do you do if you have to take a shit?

Just incase you don’t know the pressure at 245 meters depth underwater, lets just round it off to 250 meters, well 250 meters under water is 25 Bar which in PSI is 363 Pound Per Square Inch of water pressure pressing in on you at those depths. That a hell of a lot of pressure. The average bike type is 30 + PSI.

Awesome to watch and vicariously go thru too …Thankyou so much ! Came from Dive Talk when you were on ..late to it but loved listening to you talk. Much respect 🫡🙏

Amazing!

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Richard Harris, my school has made one of the mandatory books about the Thai cave rescue. After I learned about everything you and your fellow divers accomplished I was amazed, I had never been as interested and inspired by anything my whole life. Listening to who you are and your role in the rescue through various interviews and videos i have learned so much more than just how the rescue went. I grew up scared to ever take any risks out of fear and I never viewed myself as anyone who can do anything bravely, but you have shown that bravery and risk are so needed in this world. You have risked everything for anyone who needed it and I’m not just talking about the Thai cave rescue I’m talking about how you have said you practiced to help anybody stuck in a cave not just those you know. Writing this my grammar has probably been off and it may seem random but who you are has had a massive impact on who I hope to be.

Out of curiosity: when would and wouldn’t you do a rebreather dive?