Rachel and Mandy freedive to 75ft (23m)

[MRUndrwatrhuntr]

nice but the technique is not that good in my oppinion ^^

[oipbhakeld]

wish i could do this but it takes me forever to equalize my ears

[gutierrezangelm]

do you not equalize?

[twistervintagemotor]

What about your ears? when i got 13 feet down my ears want to pop so i got to go back up or else it rly hurts

[M4V3R1CK72]

@twistervintagemotor First of all, if it really hurts, then return to the surface. But there is a possibility for it to hurt on the way up if you are a little sick, so make sure you dive when your are well. The easiest way that i know of to get rid of the pain on the way down(AKA equalize) is to hold your nose tight with one hand, then blow through it. That is what the person in the green wetsuit is doing.

@TweetyGFX In free diving you breath in air, not 100% oxygen. And are you a tec diver?

[alexsotirakis]

to me it looks like she was feeling uncomfortable while going down already! and trying to get up as far as possible wasting lots of oxygen while doing unneeded movements...dont dive at those depths if you dont know how!

[galpi]

paracadutist is absolutely right. When you exhale as you are coming up you are at a greater risk of blacking out because there is a sudden drop of oxygen in your blood. You should come to the surface and calmly exhale. Also, there's no risk of lung expansion injury because you can't have more air at the end of a dive than you had at the beginning. I urge everyone to take a class and read the "Manual of Freediving".

[edmonddantes64]

@galpi Good explanation. I have used these methods and easily did 75 feet...if I can do it anyone can do it!...

It was weird being so deep and NOT having to feel like I had to breath right away.. In fact, by the time I got done "packing" air at the surface, my lugs were so full it felt good to get down to depth.

[galpi]

@edmonddantes64 75ft ... well done ! I love that feeling at depth, it is strangely incredibly comfortable.

[kastrobol]

Nice job, 75 ft. What do you think you both can reach without fins with the same effort? Maybe 40 ft? I don't know what's the ratio. 

[kebotto]

I hope no Apnea Academy instructor look this video.

Is better to stop at -5 meters better than making 25 in wrong and dangerous way.

[dreckfirmada]

nice and congratz.

but u need to relax and be way calmed under water

;-)

[theslaking2]

nice music. i want to know the artist of this music

[jammin1033]

she needs to slow the hell down! it isint a race

[paracadutist]

it's not safe to blow air during the last part of the dive

[benweiss73]

@paracadutist Why not? Especially if you're packing extra air on the surface, exhaling before surfacing prevents any possible lung expansion injury, and when you break the surface you can immediately inhale, instead of having to exhale first.

[WolfieTed]

@benweiss73 I'm with you dude. You should always exhale towards the surface, however with freediving you would be unlikely to suffer lung expansion injuries as your not breathing compressed air. One lungfull at the surface becomes 1/3 of a lung full at 20 meters and turns back into a full lungfull of air at the surface again. Still never a bad practice to get into, just in case! :)

[piaten]

@WolfieTed Are you a freediver or a sportsdiver? Just curious, cause back in the days we were taught that during sportsdiving, one blows out going up, while in freediving one hold the breath for the entirety of the dive. (blowing out too much air while under pressure will both make you heavier relative to the water, making the ascent harder, as well as increasing the risk of shallow water blackout. With compressed air this obviously does not apply.) Is there some new research that I missed?

[WolfieTed]

I am an instructor. You are correct in everything you say though. Hold you breath on compressed air and pop a lung. Breath out and you lose bouyancy. Freedivers do indeed hold their breath for the whole dive, hwever you are well within your rights to breath out a little on the way up. some deep freedives involve stretching the lungs a little before diving by forcing more air into the lung prior to breaking the water, expanding this quickly with a fast ascent "could" cause a small rupture :)

[piaten]

@WolfieTed Thank you! That's very useful information!

[WolfieTed]

@piaten SCUBA by the way, sorry forgot to add that :D

[tetraga]

@benweiss73

Nope, it is dangerous.. Want a shallow water blackout? or samba?.. You need to calm down when diving too.. your using to much of your oxygen stores... Calm and in control, and you will go a lot deeper.

[piaten]

@benweiss73 "exhaling before surfacing prevents any possible lung expansion injury" -This is plain wrong! Unless you've breathe in compressed air while submerged, lung expansion injuries are impossible! Breathing out going up does indeed increase the risk of blackout. While it might be ok to let out a small burst of air to just before breaching the surface, just to feel more comfortable, blowing out in such amounts and so far below the surface as seen here, definitely increases risk!!

[GreenWilliam3]

@benweiss73 yeah but isnt it not safe to Acent this fast? cause in Scuba diving they told us that moving that fast is a no no :l

[benweiss73]

@GreenWilliam3, in freediving you don't stay down long enough to accumulate much nitrogen in your bloodstream, and you're not breathing compressed air, so ascending rapidly is not a problem. When we dive deeper than 60m (200ft) or so, we usually breathe oxygen for a few minutes on the surface as a protective measure. But this dive is only to 25m, and only takes a minute or so.

[GreenWilliam3]

@benweiss73 o i see thanks for the info about it it looks like its alot of fun :D

[TweetyGFX]

@GreenWilliam3

Yes i took scuba too but you cant acent that fast because of the mixtures of oxygen and helium that the tank has when you are freediving you take in normal oxygen

[manugap]

@benweiss73 , remenber that this is freediving: you are coming to the surface with same volume of air you inhaled before going down. Blowing air during the last part of the dive can cause the partial pressure of Oxigen in your blood to go below a safety level and cause a blackout. This is a very different sittuation from scuba diving.

[pchou]

@paracadutist

umm..please explain because Boyle's law disagree.



[paracadutist]

@pchou why disagree? in the surface we have 1 bar.. at - 10m we have 2 bar

[pchou]

@paracadutist

there are more pressure acting on her at -10m then on surface level, given this situation. Thus the air intake on the surface in follow the P/V, if we assume constant nRT, P increases thus V decreases. So, as she come up to surface the same "tidal volume" on 1atm will actually be resumed as the air to lung volume ratio should be consistent due to same acting pressure on both V.

If out gassing can be "ignored" she can shoot up almost as fast as she want, blowing bubble or not.

[martyr2005]

rachel toles, were you breathing out while going up?

i v been told never to do that....always hold your air (even if is co2) untill you are on the surface....

nice dive

[paulblackpb]

hey i have a question, why the mono kick style without the monofin? is she training for monofin. i like the dive, congratulations. very steady video too but then hey, it is kirk krack

[benweiss73]

@paulblackpb The dolphin kick can be more efficient than flutter kick, even with bi-fins. And yeah, Kirk is good!!

[paulblackpb]

@benweiss73 i dolphin kick too sometimes. and mostly always when chillin on scuba. but its a lot slower than when using a monofin and i find i dont get the same power as bi fining, but then again i cant monofin for shit.. Ha Ha

[brysonwilliams70]

this is not 75 ft -_- this is like 25 at best

[benweiss73]

@brysonwilliams70 : It was 23m (75ft) by Rachel's gauge. The cameraman (Kirk Krack) swam down with them, which makes it look like they're swimming slower than they actually are. The dive time is 55 seconds, and a typical dive speed is about a meter per second, which is exactly right for a 23m dive. I was there with them and swam down to watch: I can confirm that it was 23m.

[CyberEditing]

@benweiss73 The depth stats are accurate.

However, I have one observation that you can correct if necessary: the left hand diver (Rachel I think) looks both a little inexperienced & uncomfortable.....

However congratulations on the fine effort!

[bubblerings]

@brysonwilliams70 Yeah, looks wrong, but they shot it weird... oh well.

Even with the mooring ball in the background, also makes it look really shallow.

(at least they are shallow, here on Maui)

[brysonwiilliamsisgay]

@brysonwilliams70 Yeah dude. Who are you? Coming in here and acting like you even know. Its clearly more than 25 feet. With fins she is 6 ft tall. so at 0:04 of the video she is already 6 feet deep at least. She dives down for more than 30 seconds afterwards. clearly she is not diving less that 1 foot a second. and yes my profile name is because is based on your stupidity and how gay I think it is.

[lildragonflybot]

OK I'm so fucking jealous...I devoted 10 years of my life to freediving and rarely get below 20 feet :(

[Lehmann108]

Wow, you have got to learn to relax! Way to frantic and stressed! I'm amazed you could go beyond ten feet with that sloppy technique!

[tuttt99]

Wow,

Deepest I have gone is 55 feet. Once you get below 40' it's a LONG way back up!

[jollyholly]

great accomplishment! aswome job. jst work on the kick. that is the major thing. if your kick was more fluid and long (instead of small twitches and spurts) you could hav reached 80ft easily.

[mavica130]

nice job !!!

[asghilo]

Great Job!! Its always a beautiful thing to reach your Personal Best! You might wanna work on your kicking technique. Nice and Smooth. Looks like you're having a convulsion! LOL! Keep up the good work! MAybe i'll get to see you guys out there one day!

[andyorbij2]

Wow Mandy! Im going to swim just like you one day..

[Piooro76]

Niiice, Ladies:)

[Lehmann108]

Rachel, nice job but you have too slow down your movements...slow...clamn... Look at Mandy, smooth as silk.

[rtoles83]

Four days before this dive I had never been in water deeper than 6 ft. This was my 4th day attempting to free-dive, so I would say I was doing pretty well getting to 75 ft!

[sofabike]

Please indicate who is who?

Lady with siver diveskins =?

Lady with green-black diveskins =?

Nice way to teach new fdivers:)))

droping ALL **********STARS

to Rachel Toles and Mandy-Ray and shurly to cameraOperator

[dangerweasel83]

Rachel Toles is in the green-black diveskins

Mandy-Ray is in the silver

[allinapnea]

Nice to see some freediving girls, including Mandy-Ray!

Nice dive, thanks for posting!

[dangerweasel83]

amazing!