exactly, its not a real big thing to be down 20 feet, ive held my breath and swam down farther than that..its just something that startled the crap out of me and i took a breath of fresh water...
im not sure if there ever will be a practical application for what ive done. But if im in the water and for whatever reason cant get out of something like a wreck...(example. diving in a wreck you have a collapse[i dont want to hear about evaluating stability. this is an example] and the exit is reduced to a size where only you can fit out of with no gear, you ditch your gear and head for the surface 20 feet above, while your buddy cant get your rig out of the ever collapsing hole.. he surfaces and says to swim down and grab it because he couldnt fit. his air is there if you need it. you go in on a breath hold, detach your regs and throw those into the sand, followed by your air tank, then your bc and so on. meanwhile taking a breath off your buddys air. once everything is accounted for you half assemble your gear and bring it to the surface to dry.)
IT HAPPENS EVERY DAY!
lol its not so much needed as a D&R as it could be a useful tool in other ways to be determined.
like people have been saying, diving is a serious sport. and perhaps if you knew me there would be a different opinion. you may pick up a news paper or dive mag, i read, and re-read my equipment manuals, dive log and various pneumatics books, the more you fill your head, the less scary something becomes. you tame the monster in you. but still hold a very high sobriety, and respect for what it is capable of.
never underestimate who you are as a diver, overestimate in practice on dry land and learn for the water. i dont think theres a moment where i was truly afraid for my life, or afraid of something terrible happening, i know the area, i know the current as i set the current, and helped dig the lake. the worst possible scenario for this would be death(same as walking down the street), but my buddy would not allow that. so play smart, if you start gulping, do something about it before it constricts your airway. learn to control reflexes too.