How do divers?

Question

How can divers swim like a hundred feet down? When I go to my local swimmimg pool and try to touch the bottom my ears feel like they are going to pop.

Answer 1

they constantly pop their ears as they go down

squeez your nostrils then try to blow outta your nose

Answer 2

The sensation you are feeling is the difference in air pressure of your sinus cavities and eustachian tubes from the inner ears.
The ambient water pressure, when you start to descend, becomes greater than the air pressure trapped in these air spaces in your mellon. If you don't do anything about it and continue to go deeper, the eustachian tube can actually collapse, preventing any way to get rid of this pressure difference. The same goes for openings in the sinus cavity. This can lead to the point of severe pain, and then damage can occur. You can bow out your sinus's or possibly blow out an ear drum.
There are a few methods a diver can employ to help equalize this pressure difference ( yup, it's called equalizing). The most common is called the valsalva technique. If you look at a proper scuba mask, it has a pocket that your nose fits in, inside the mask. As we begin to go down, we pinch our nose in the pocket, with our fingers and blow gently, not allowing any air to escape from our lips. If it's done right and done before the cavities or tubes collapse, this pressurizes those air spaces to the same pressure as the surrounding water. No pressure difference, no popping or pain. This has to be done continuously as we descend. When we stop descending, we also stop equalizing. This method works for ALL divers.
The second method is to move your lower jaw forwards and backwards. Your tubes run near the back of your jaw and this action massages air into them and helps keep them open. Not many divers can get away with this hands free approach, but I know a few that can.
The last is called the Frenzel and involves pinching your nose, keeping your mouth sealed and rolling your tongue back to the back of the roof of your mouth. This muscle action opens up both the sinus and eustachian tubes for equalizing. This works for most divers.
When you start to come up, the reverse now happens. The pressure inside your air spaces increases as the ambient water pressure acting on those spaces decreases. Usually there's nothing you need to do. Your ears will pop by themselves as the pressure is released. Same with your sinus cavities. In rare cases, if you have a head cold, this won't happen. Your tubes are blocked again. This can be painful and can involve blood. It's happened to me, where 1 foot from the surface at the end of a dive, the pent up pressure in the sinus hasn't equalized on the ascent, then suddenly let go in one massive burst. The result, you can't see where you're going from the blood all over the mask glass. Think fast furious nose bleed, in one second. Gross, but happens. Your diving is done for at least a week as the rupture repairs itself.

Answer 3

You have to equalize the pressure in your ears. Once you are under the water, [inch your nose, close your mouth, and try to breath out. This should cause your ears to equalize and not hurt.

Answer 4

its called equalization...when you dive pressure comes from the depth you are diving, myself i can equalize naturally , or as we teach students to pinch...gently their nose and blow gently to "pop" the ears...or swallow ..lol.. after a while you should be able to do it naturally...and whatever you do, don't push yourself to the outer limits, ear pressure can cause extreme pain and cause rupture of the ear drum...very painful

Answer 5

They know how topop heir ears,
really deep divers wear preasurized suits

Answer 6

it depends on how fast you decend or ascend, if you allow time for the pressure to even out it wont hurt.

Answer 7

Google search "deep sea diving"

Answer 8

you get your arms up and get nikeda dn dive in

Answer 9

they train.