Hi....I love swimming and underwater activities, but I just randomly was wondering : Why can't people breath underwater?
200674
Try SCUBA diving!!!!   I love swimming underwater too and love scuba diving.  It's the most incredible sport I've ever done.  You get to see all the great stuff in the ocean.  Try it!!!\n\nWhen you go through a certification course you can learn all about the human physiology and diving.  We have other differences from marine mammals that prevent us from diving like they do even if we could hold our breath longer.
395531
Well, I’m quite sure that anyone can learn how to swim. Just remember to have motivation in learning how to swim. Practice is also very important. And in any swimming method you learn, before swimming or while preparing to swim, just remember to RELAX. Try to make you body one with the water---treat swimming and the water like a bed where you can relax and be you----then I’m quite sure that with all these techniques, you will be able to learn how to swim quickly. I hope this info. helps! Take care! God Bless!
162244
Swimming is exersize!  Any movement in a pool is good!  Just try simple arobics in the pool!  Good luck!
567556
I think you mean gills.\n\nThere are artificial liquids available:\nLiquid breathing is a form of respiration in which a normally air-breathing organism breathes an oxygen rich liquid (usually from the perfluorocarbon family), rather than breathing air. It is used for medical treatment and could someday find use in deep diving and space travel. Liquid breathing is sometimes called "fluid breathing", but this is misleading as both liquids and gases are fluids.\n\nNanotechnology is be used to create respirocytes which act as artificial red blood cells and could allow you to hold your breath for 1-2 hours underwater.
626145
Glad you picked up on it. Because they want to be. Like water. Anyone can hang around the edge. It takes skill, development, to swim. Specially in deep water. Little children it's alright for. Some people take wanting to remain children in the negative aspect to a lifetime extreme. Some things of a child you should retain. Not all.
125033
It's a form of underwater swimming
348261
We're taught to never hold our breath on ascent, no matter if it's an out of air emergency ascent situation or a normal ascent to the surface. The last breath we take in, at depth , grows in volume as we ascend. If we didn't constantly breathe with that all important exhalation, air in the aveoli (air sacs) of our lungs would grow in volume to the point they popped. You now get to drown in your own blood. \n By never holding out breath, we keep the pressure differential down to a minimum between ambient and internal.\n As for taking a deep breath before going down, it doesn't matter. We breathe at a normal rate, just like you are now and as long as we're not over exerting ourselves, that really doesn't change.\n\n Lol, diver dude, some really far out answers in there,eh?
600032
Thats pretty cold, I have swam in that temperature and I can tell you it sucks!! \n\nIf you have a group of polar bears or masoquists that like to freeze their a.. off then go ahead, just make sure you talk loud because their trembling jaws will be making a lot of noise!
160427
SELF-CONTAINED UNDERWATER BREATHING APPARATUS!!!\n\npick meeee please?
503398
For swimming underwater, you need to condition yourself small steps at a time. First just dunk your head underwater with a stopwatch, see how long you last, then try going longer, at least like 2 seconds, each try, after a while your lungs will get used to it. I did that and after a while I could hold my breath for 2 minutes and 10 seconds underwater, it's not much but it's a lot better than the 45 seconds I could before. For singing, it works differently, although you could reinforce your breath holding by using the technique above. What works for me though, is taking small breaths, like 1/2 seconds breath every once in a while. I learned to do so by watching rappers, they do it from time to time to be able to keep on going. Good luck with that.
676360
I don't get it either!  My mom can't swim and it seriously irriates me.  As far as I know, she hasn't had any life-altering experience in the water that makes her afraid of it, she just says that she will just sink!  I just don't get it!
218282
You can produce tears underwater, but you can't cry -- unless you want a bunch of water in your lungs!
643956
Maybe it has something to do with the actions you're making.  When you're timing yourself out of water, you're just sitting there right?  But when your under water, you're treding or moving in some sort?  Try timing yourself when your walking around the house or jumping up and down....the blood takes in more oxygen(which means you need more) when its pumping faster.  Just an idea!
620642
Under what conditions?\n\nI recall seeing an article about a hotel in the Florida Keys that has made a series of underwater "bungaloes" that guests need to SCUBA dive down to, and out of.  Looks like it would be interesting.  And there are deep-sea researchers that live at depth for some time.\n\nBut either one requires a great deal of support at this time, since none of them could be considered self-sufficient.  Perhaps in the future?
382375
It's hard to say. It could be possible that being underwater for a week got his body used to the pressure of being underwater and made it less stressful to hold his breath, my guess is that if he had spent a day or two underwater he would have broken the record because his body would have been used to the underwater enviroment but he wouldn't have gone through all the stress of his week long trick.
397022
well, you don't have to open your eyes. you should be fine...if you can't open them, don't try. get goggles, maybe. otherwise, there isn't really a point in trying to open your eyes underwater.
541559
Right here! Me! I can't swim either! I only began to learn to siwm in grade 10 Gym class and that's history. By the way... it's not weird AT ALL!!