wiscuba.com

Here is a simple demonstration of the power of pressure underwater. At the surface, the bottle is full of air.

At 27 feet, this bottle really gets squeezed.

Doug

right... that's a good example of why equalizing while free diving can get to be a bit tricky. Your lungs start to look like that bottle....
Fred

Very good point. Puts a new meaning to squeeze.
:o
Doug

Here's another demonstration.

This was a foam cup that Mandy-Rae took with her on a 453' sled dive. :o

Jon

Doug,
I like Jon's example better That's cool.

That's pretty sweet

I always had fun taking bottles underwater with me - what's kinda freaky is if they implode all off a sudden on you...they sound like a bomb going off.

It reminds of the Rodales article of "100 fun things to do underwater". One of them was to sneak a tennis ball into your partners BC because it won't slowly shrink, it will all of a sudden implode with a good boom at about 100 feet...

heheh...