Question

you bring a long snorkel with you to the bottom of a deep swimming pool. The snorkel provides a direct path between your lungs and the air above, but you still can't breathe through it. why?

Answer 1

* Most of the snorkel tubes are very short in size for the observation and of these fishes tubes and are coral designed reefs. * * The water pressure gets high and fast so that compresses air inside the lungs. so, if air i mot exchanged at much different pressure, there is no worry at the lungs. It air is enchanged the pressure becomes different at different atmosphere and it becomes difficult for breathing *

* you will be able to exhale but mot inhale. * so you can't breathe through it when there is change in pressure difference