On Sun, 07 Oct 2007 20:06:40 -0700, Chuck Gould
wrote:

People should dive with a buddy. But, for those who don't or can't,
shouldn't there be some sort of small EPIRB or other emergency device
that a diver could cut loose and let rise to the surface? (I'm pretty
sure GPS doesn't work under water.......but I don't know for an
established fact that it doesn't).

Surface currents are very different from bottom currents - one can go
one way while the victim or diver can go the other way.

I sort of agree with you - it would make sense to come up with a
system that worked on air flow - once the air flow stops, something
pops to the surface and starts screaming for help.

Hmmm - think I need to visit the patent office today.