Re: [PSUBS-MAILIST] Ambient subs

[John Farrington <jrf@prismnet.com>]

Hi Greg,

As far as it being uncomfortable to dive to 15 feet, you need to learn
what is called the 'valsalva maneuver'.  I would have loved to have
known about this throughout childhood.  Oh, those many moments spent
at the bottom of swimming pools with ears aching.

I am assuming that you're talking about the uncomfortable pressure (pain)
felt on the eardrums when you dive to 8+ feet of water?

If so, do a search on the net for 'valsalva maneuver' and see what you
get.  An absolute 'must' to understand if you're wanting to deal with
an ambient pressure sub (or scuba diving below 10 feet).  That's how divers
can go to 150+ feet without any problems.

-John