how much can man dive underwater?
114376
The current record for "freediving" is 439 feet.\nSee reference #1.\n\nThe record for diving with scuba gear is 318.25 meters.\nSee reference #2.\n\nThe deepest dive in a "bathysphere" was in the \nMarianas Trenches to a depth of 10,915m.\nSee reference #3.
29986
http://en.wikipedia.org/wiki/Diving_equipment
105900
Occupation Diver\nCause of death the bends from comming up 100 feet in too short of time
9545
This is one of the questions that will always remain unanswered. But the answer should be that the other divers will try to save him. The life of a person is more important that a prize in a competition.
962325
Go for it! Most divers are gymnasts or atleast have been. Gymnastics will definitely give you a huge advantage. If I were you, I would do it without a doubt.
368604
SELF-CONTAINED UNDERWATER BREATHING APPARATUS!!!\n\npick meeee please?
469473
Self Contained Underwater Breathing Apparatus
320348
Deep ocean travel requires two things:\nProtection from the enormous pressure\nAdequate supply of oxygen and breathing gas for the safe return to the surface.\n\nAs we dive deeper, our bodies are subjected to the increasing water pressure.  This is especially so if we dive only to depths of less than 100 meters.  As we dive deeper, our bodies are subjected to greater pressure.  Our blood absorbs MORE gas (namely nitrogen gas); as we return to the surface, the increased amount of nitrogen gas in the bloodstream begins to leave the bloodstream.\n\nIf divers return to the surface too fast, the nitrogen gas will bubble out too fast causing a painful and possibly fatal condition called "The Bends".  So, divers must "acclimate" to sea level pressure slowly.\n\nDivers who dive very deep must remain inside pressure chambers in which the air pressure is slowly reduced to sea level pressure, gently allowing the (bloodstream's) absorbed nitrogen gas to escape safely.
131602
It's only a mile for crying out loud.  Don't worry... if you can swim 2000 yards in a regular pool without stopping at a pace of around 50 seconds per 50 you will have no problem.
443013
It depends on how far out of the water you wish to be.  Humans are very close to being bouyant-we are more dense than water, but have lungs full of air, thus a lean man with a large lung capacity is bouyant with a deep breath.  Its isnt the pounds of air that matter, its the pounds of water displaced by the air.  If you hold onto a 10 gallon jug full of air, it displaces 10 gallons worth of water, which is about 80 pds-well more than you need to keep your upper body above water.  For a 200 pd man, he would need an water-displacing container of 25 gallons (this could be a boat or anything else that displaces water for air).
84653
anything under 50 sec per 50m of the 500m is great for non-swimmers.  Anything over 1 min per 50m is poor.
1158006
You can scuba dive in just about any water with the correct kit (with a good drysuit and electric undersuit, you can dive in the Artic). \nSo the answer is YES... speak to a local dive shop to get them to lend you the kit.try www.padi.com for the local centres
1144865
Underwater cave diving
568014
When diving below about 10 feet, the pressure increases more than 25%- Generally, your ear canal holds a bubble of water, at least initially, so in effect the increased pressure on your eardrum is air pressure.  There would be no significant effect on the rest of your body at all-a 25% increase isn't much.  Deep sea divers can work quite well in pressures many multiples of the standard at sea level-and the gas mixture entering the lungs at that depth is the same as the total pressure exerted on the diver.  At very high pressures like this, more gas will dissolve in the blood, and then when the pressure decreases (as when the diver is surfacing) that increased dissolved gas will start to come out of solution-sort of like CO2 comes out of a can of soda when you open it...not good for you at all!  This is called "the bends", is extremely painful and potentially fatal- TO get around this, divers come up very slowly, so the gas coming out of the blood can be expelled by the lungs.  \nBut, to be more direct, an increase in pressure of only 25% is equivalent to a dive of 10 feet into water- you ears would pop just like when you fly in an airplane, nothing more
916868
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.
689078
Yes, commercial oilfield divers regularly work at that depth and deeper. It has become fashionable for amatuer scuba divers to exceed 300' also, though the equipment and minimal back-up they have make this a risky enterprise.\n\nRight now, as you read this there will be an oilfield diver working offshore Brazil in 1,400... yes 1,400 feet of water!
975304
Your wording of the question is going to throw many for a loop. I had to scratch my head for a second to figure out what you wanted.\n Everybody's cold tolerance is different and every dive is different as well. For example, mid summer diving in Tobermory Ontario on the Niagara II, outside the wreck a 5mm would be fine. Inside you need a 7mm or turn blue. That applies everywhere in the world. You never know about thermoclines, currents etc.\n I'd be asking at a dive shop that is local to the area you want to dive. They know the average water temps for that area for the time of year you're thinking of diving.\n Sorry, but the way the question stands, you really can't expect an accurate answer other than 3mm to 7mm two piece with hood.