Gene Kearns wrote:

ROFL..... when I learned to dive, now, about 40 years ago, the
instructors had us try breathing with our snorkels detached and held
in a manner similar to those movies where a reed is cut and employed
as a "snorkel."

Trust me, anything over a few inches and the water pressure will make
it impossible for you to do anything but exhale....

Yep... the human chest is a magnificent piece of engineering, but it is not built for that.



My advices is not all that different from suggestions from others....

1) Take Lessons
2) Employ a small tank or, perhaps, budget permitting, a small
floating compressor....

If you use a compressor, make sure to run the air discharge through a good filter/seperator before
breathing it. Most non dive certified compressors discharge an oil vapor that will ruin your lungs.

Fresh Breezes- Doug King