Hello,
You can safely cough (or even throw up) into a regulator if that is what you need to do to get the salt water out. I do not know of getting water out other than what comes naturally: cough.
Just my 2c.
Deep water layer
water pressure
yeah, it's called tyopholosis, and it's a crippling fear of deep underwater spaces. I HAVE IT!
40 metres
The pressure of the water that deep would crush a person.
deep deep deep underwater
There is greater pressure the deeper you go in water. So if you go too deep, the pressure in the human lungs will be so great and too much that the persons lungs will collapse.
There was a deep trough where the lake water emptied into the river.Scientists have been looking for rare fish in the deep underwater trough.
An abyssal seamount is the term used for an underwater mountain. The term "abyssal" indicates that it is located in very deep water.
Deep, very deep
That right there is sonar.
good stuff