Apnea Girl Versus Girl 178

Well I think a discussion like this could be interesting sometimes. In how I didn’t know what RV training was. So had to look it up and did find out about how different marine animals dives.

Didrik Svahn

Yeah I did notice that occy or octopus as it also is called. I really like that detail which shows that you (Saver) cares about accuracy :D

Didrik Svahn

Thank you all for your interests, I did not know what an RV state was so definitely helpful! Also see how Saver’s grasp of scuba diving is helping his work (e.g. how Ken is using an occy (backup) reg and the hose is pointing to Chihaya’s left (which is how it would work). :-)

savaster

Well, I don't know about animals, but free divers use RV training only to safely simulate deep water conditions. If you're empty lungs at the surface, when you're diving in 10 meters deep, you're 70 meters normal diving conditions. Your buddy can save you if you have an accident at 10 meters, but you will die if you have an accident at 70 meters. and Plus I'll stop debating this topic, it's just comics after all, it's stupid to consider reality. I'm sorry my discussion led to controversy

Excellent! Now we'll see if Chihaya was rescued in time...

Nathan Sample

水深200m以上往復素潜りで10分以上息止めしてる時点で現実味何てもどうでもいいよ😂

mokoprotoss

Also in the mini picture series which is a crossover with Dradragon OC Mira. We have seen Aya being able to breathe water temporarily. Also a thing to remember is that before this dive. Eri put the cousin on a brutal diet (according to the cousins) to shave off every extra gram of fat on their bodies. To probably make them able to dive to greater depths quicker.

Didrik Svahn

Well I did look up RV freediving and it seems to be inspired from how large marine animals exhale before a dive. However those big animals does that to keep their bouncy because of all the fat that they do have. Meanwhile dolphins and humans dives with inhaling at first because their bouncy isn’t that great.

Didrik Svahn

We also know, according to the lore of the Five Minute Summer Universe, established first by Dr. Natori’s research and later by the fan project The Surface, that all three divers have enlarged, hyper-efficient lungs, to the point of almost being engorged, so it’s completely possible that a depth that would result in empty lungs in our universe would only serve to shrink theirs. So it’s entirely possible that they have shrunken, but still usable, lung volume down to 200 meters or more, and it’s why all three have focused on training using empty lungs, since past their current depth they’ll have to continue without the use of their chest cavity.

Titan1017

I think you need to smooch Chi now Ken. to blow air into her :3

melangalade

I'm sorry that my English is not so good. I don't know how to explain the meaning of empty lung here Here empty refers to a relative state, not physical absolute meaning... In fact, you can't exhale all the air in your lungs. After exhaling all the air, the amount of residual air in your lungs is about 1/4 full air.It's like trying to squeeze a plastic coke bottle, but no matter how hard you squeeze, there's still air inside.this situation called RV.The depth of the RV is about 30 meters in fact, there are an advanced but dangerous exercises in free diving is RV freediving training,it's to simulate the RV state by diving at the surface with as much air as possible out of your lungs. There is also a weaker but safer version of this training is in FRC situation. I've never practiced those two, but my coach is said to have

Sorry for being sloppy, the version I wrote before was twice as long but disappeared. eidt：f***， I decide stopped writing. My article disappeared again

I'm a little overwhelmed. I just wrote a long paragraph and it disappeared...

Most Heartwarming scene 😌 Let's hope Chihaya will wake up now

SwimDeepFreya

Yeah I know that the lungs of a freediver compass as they dive deeper. But even if they lungs only have the volume 1,5 liter or 0,6 liter which they would be at the depths of 30 and 90 meters down. They still wouldn't be empty, and their bubbles would just expand in volume as they raise up towards the surface. Also I rather give a pass to biological stuff like breath holding abilities then physical stuff like the pressure of gases at great water depth. Because as you say we still don't know the limits of the human body when it comes to diving and survival underwater. Unlike physical laws which we know is much more consistence. One example of that is how certain tribes of people that have been freediving for generations. Can keep their breaths for over five minutes at good depths, while having no difficulty seeing underwater at all really.

Didrik Svahn

Correct if you're using normal air (79% Nitrogen & 21 Oxygen) then the limit is around 30-40 meters. If you go below that you start getting narcosis which basically make you feel drunk. Which if Ken is anything like Eri when she gets drunk may lead to some inappropriate situation lol. If you want to learn more about deep diving I would recommend the YT channel Dive talk. Where two cave divers talks a lot about cave and deep water diving.

Didrik Svahn

I don't think the depth will be very deep (less than 40m). I don't know much about deep diving. but air tank can only support dives up to 40 meters, dives beyond 40 meters require nitrox tank.

but of course, it would be silly to talk about reality in comics, After all, there are no free divers in the real world as good as these three lady. And, please let me know if these things bother you, and I will delete those above word

So in the real world, it would have been impossible to exhale bubbles at the depth of their diving, because their lungs would have been empty. At a depth of 30 meters, you would only have a quarter of the volume of air at the surface.

No, as you go deeper, your lungs compress and your buoyancy decreases. The neutral buoyancy in free diving varies from person to person, but it's somewhere between 10 and 15 meters deep. And then you have negative buoyancy.

As far as we know, yes, those pictures are canon. Or at least, we haven’t been told otherwise and they appear to be the right age. The issue right now of purging Chihaya of water is that she’s likely flooded already, as we know she stays neutrally buoyant even with empty lungs, so the only reason she should have been sinking was because she had already taken in dangerous amounts of water when she lost control and began breathing. But is Chihaya still breathing; or at least, is her diaphragm moving enough to draw air/liquid into and out of her lungs?

Titan1017

but...At that depth and after the amount of time you have been holding your breath, your body will likely not want you to breath, almost as if knowing at the subconcious level that you are in water and should not breath. If you listen to world record freedivers in interviews they will often talk about how their bodies want to breath only tentativly at first after getting to the surface, before they can start taking full breaths, with their bodies almost wanting to make sure they are in air before breathing. There is a lot we dont know about the mamalian effect and what the body is doing at those depths. Everyone's body is different.

Ok but is those pictures canon? Because when did they take place, I would guess after the Five Minutes Summer story but before the Apnea Girl vs Girl story.

Didrik Svahn

But if she's dry drowning or just BO, that's probably not a problem, as her throat relaxes and she starts breathing on her own.

Yeah, that's a big problem, to be honest. Even if you hold her nose, the air will come out of the regulator's vent -- unless you block the vent too.

We’ve seen Chihaya and Saki in scuba gear a couple of times, though not Aya. There was Cobalt Plus: Scuba Chihaya and Saki, Aquarium Diver Chihaya, and Suichuu Knee So series of pictures.

Titan1017

ken, mah man !

thekill

Yeah I would also like to see Eri's diving watch again. And have the cousins even learned to use scuba? As I remember that leading to a bad end in the Original Five Minutes Summer story here https://www.deviantart.com/wave-lens/art/Five-Minute-Summer-24-6-43-08-485046642 So even if Chihaya could breathe with her lungs flooded. It would delay her ascent to the surface, so with Chihaya and Ken buddy breathing. I would if just one tank will be enough as they must stop at certain depths to avoid decompressing sickness. Also I agree Tomokazu should join the party and dive into the water as well so that the full team is in the sea :)

Didrik Svahn

Would you mind letting us take a look at Eri’s watch again for the depth? I’ll admit, I’m not familiar with how you would purge a drowned person’s lungs of water with scuba, at least not while still underwater. This would also slow Chihaya’s possible ascent to a dive-table, and it’s not like she’s equipped with gear of her own, and I imagine she needs more extensive medical attention than is available to her at however deep they are. This also brings up whether Ken simply skipped the other three, and whether that was planned. The only person not under the water now is Tomokazu, and I hope we rectify that soon, as well as switch back to his sister and our other cousin. How are they doing?

Titan1017

Ken ftw!

melangalade

Yeah! Ken you done it!

pixe

How did Ken managed to get down to that depth?! Also which depth is Chihaya?

Didrik Svahn