Rachel and Mandy freedive to 75ft (23m)

Rachel Toles (green) and Mandy-Rae Krack freedive tandem to 75ft (23m) at Honaunau Bay in Kona HI, August 2008, part of Performance Freediving's intermediate course. Video by Kirk Krack/PFI, posted with permission.

Category:

Sports

Tags:

• freediving
• diving
• scuba
• performancefreediving
• pfi

[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.

[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.

[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!!

[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".

[galpi]

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

[MRUndrwatrhuntr]

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

[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.

[oipbhakeld]

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

[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.

[gutierrezangelm]

do you not equalize?

[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?

[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

[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

[GreenWilliam3]

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