can you cry underwater?
595757
Well, crying sound can be heard underwater. But, do tears appear when u cry underwater? No. thats because the pressure outside, that of the surrounding water, is greater than that of our tears. \n\n\nhm. I might be wrong. I dont know.
819441
I think it would be awesome, so long as you're comfortable with water. :)  I've heard that Navy divers have great fun in their jobs.
799906
I don't see how sneezing underwater could be possible. I mean, getting the urge to sneeze occurs because something tickles our hair follicles inside our nose as we breathe. But because breathing underwater isn't possible without scuba gear, I don't think that getting the urge to sneeze underwater would be possible either.\n\nIf water did happen to get in your nose, your natural reaction is to immediately surface and breathe in air in order to clear your lungs. So if someone did somehow happen to get the urge to sneeze underwater, their reaction would be to surface and then sneeze.
1026618
yeah,i did.\ni always cry under the shower so nobody could hear.
383444
No.  There's nowhere near enough pressure.  You need to go down about 50 meters before the bends can hit you upon surfacing.  Depending on your physicall fitness, you may even be able to go deeper.
479513
During pregnancy, there is a stage where the human fetus has gill slits, but by the time a baby is able to survive outside it's mother, these have disappeared.  Babies, as we would think of a baby, can NOT breathe underwater- they have air breathing lungs, just like you, and would drown.\n\nThere is something called the mammalian dive reflex, which slows respiration, and can allow someone to survive for a short time (perhaps a few minutes depending on the circumstances) under water just from the oxygen they receive from the water, however this works best in very cold water, which has more dissolved oxygen.  People with smaller bodies, like babies and young children are more likely to survive longer under water.  This is where stories of kids serviving under lakes for long periods (15 min, or so) come from.
1121703
weeping,crying and yelling
859344
Firstly i have to mention, Whilst I am certified, I'm not the most experienced diver, so I cant speak for everyone,but I think everyone dives for their own reasons, and some of us may not be all that sane :) but I can tell you why I do. It is like going to another planet, the beauty never fails to surprise and amaze. Every single dive is different and you never know what you'll see. If your want you can interact with amazing wildlife, and some of them want to play with you! As a water baby I find an awesome sense of peace by just being underwater, I cant believe that not everyone feels the same way...And the way you feel more alive just after a dive is worth all the trouble. Yes we do have to ALWAYS have to keep in mind the dangers, there are so many of them, but I think that goes hand in hand with respecting the amazing environment we are about to enter, our bodies are not built to go where it cant get its most fundamental need, air, but a lucky few of us brave it anyway.. Hopefully the dangers keep people who shouldn't be diving out of it..bad buddy experience..
595305
No ... you will demonstrate that you have a heart :) it's oki if you cry !
480268
You can produce tears underwater, but you can't cry -- unless you want a bunch of water in your lungs!
889789
bite your bittom lip and think "DON'T CRY. DON'T CRY."
363584
Most US Navy subs can do at least 40 MPH submerged. I don't think you could hang on, even if you could survive the impact. And they have a little thing called sonar which keeps people from being able to sneak up on them unobserved. The sonar puts out pulses that can travel a hundred miles and return, they are pretty powerful. Used in 'antipersonnel mode', it would be like getting hit with a sledgehammer.\n\nWhat you need is a 'density shunt', a powered suit of armor of material MUCH denser than water (and you), like osmium. It is a rare metal, so this would be expensive. But in theory, with an osmium diving suit, the sonar pulses would travel through the suit, around you,and would affect you much less than if you were in contact with the water. \n\nTo get hold of the sub, instead of suction cups, I'd recommend a grappling hook with a cable, loop the cable around the conning tower. They'd have to have guys come out and physically cut the cable before they could get rid of you. \n\nWatch out for those SEALS, though. You might need to use some exploding harpoons from a CO2 powered spear gun to keep them from stopping you.... uh, just what is it you were planning anyhow...? Nothing bad, right, I mean, you're a loyal American, aren't you...? I hope I didn't just give away the weaknesses of the Navy. Listen, don't tell this to anybody else, OK?
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
645144
you could breathe through a tube down as deep as perhaps one atmosphere.  beyond that the surrounding water pressure on your chest would prohibit you from taking a breath from surface air.
273090
I pray, read the Bible, put on good music (something with a beat to get me moving and laughing again), call a friend and go get some gelato, write, paint, workout, curl up in my hubby's arms, call someone I love and see how they are doing.  However, if I need to cry, I do.  Crying is good sometimes.  \n\nIt depends on what the situation is.  The important part is recognizing when you are down, so you can find a way to come back up. :)\n\nKeep smiling :))
256397
Go into space and your tears may become beautiful spheres of human saline lubricant floating through the air.  pretty bubble tears.\nYou can make them do tricks and try to make them combine to form a larger, even more beautiful sphere of human eye lubricant.\n\nYou would have to projectile cry if you wish to launch the tears though...and I don't know anyone who can do that personally.  Normal people would have to get it started by flicking them off themselves with a fingernail.\n\n.
1070726
If it is well controlled, yes.  If not, you are at serious risk for a lung injury.\n\nHere is why.  Asthma is an inflammation of the breathing passages.  This reults in anrrowing and can result in air being trapped (at leats for a short period of time).  At constant pressures, no problem.  But when diving the ambient pressure changes.  \n\nIf you filled a ballon half way full at 30 feet depth, when you surfaced the ballon would be fully inflated.  (The reverse is true as well).  The problem is what if the air inside a trapped space doubles in volume - it has to go somewhere.  Barotrauma is the result.  The ability to equalize these pressure is essential to SCUBA diving -- be it the lungs, inner ear or sinus.\n\nOne other wrinkle: SCUBA can trigger asthma.  Some asthma seems to be initiated by breathing in a bit of salt water (unlikely, but it could happen) or by exercise (like kciking against a current).  \n\nMy advice:  Consult with a doctor familiar with diving physiology. and your clinical history.