" I think divers have a term for a similar phenomenum, _shallow water
blackout_.

Very interesting! Thanks Fredfighter.

Yes, thanks, I think.

I sometimes think that it is a miracle that I didn't manage to kill myself,
one way or the other, while growing up.

I spent a lot of time in pools and lakes as a kid, and was quite good at
spending large periods of time underwater, holding my breath. Sometimes it
was competing for swiming the greatest distance underwater. Sometimes it
was working on building stuff, like weighing down a plastic barrel upside
down, so we could swim under it, and hang out in the pocket of trapped air.

I was appauled to read about the symptoms I oftened experienced, and how
close I (and my buddies) came to doing serious harm. Wow!
--
Jim in NC