Can people swim with their mouths open?

Question

Without letting out any oxygen?

Cuz on TV I see people smile and everything, and without letting out any air would water be bottled up in your mouth if you close it?

I was just wondering.

Answer 1

Yup. When I swim, I always have my mouth open. It's kinda gross, but I feel like I can hold in the air longer.  :)

Answer 2

yup.. do it all the time!

Answer 3

i can: ]

Answer 4

yes. i'm doing that a lot of times already in competitions

Answer 5

As long as you can keep your throat shut when you smile, then your air will stay in your air pipe and lungs. When you close your mouth, I would think that it's the tongue movement that would push the water and keep it out.

Answer 6

ya, i open my mouth underwater and it doesnt change how long im under

Answer 7

yeah, when im competitively swimming i never close my mouth!

its like you have an air bubble inside your mouth, and it doesnt affect you at all !