Quote: (Originally Posted by
Freef)

Not a terribly accurate example as the bag is hardly rigid like the body. You might as well say fill a balloon with air under water and observe it's shape and then observe it again at the surface.
Actually I think you'll find that from a hydraulic pressure point of view the human body is not rigid at all.. the skeleton is on the inside and does not protect the body's liquids from pressure at all (except perhaps the brain to a limited extent) and this is the whole point.. the liquids are suddenly subjected to all round pressure rather than just the effects of gravity..
..but hey... I am not a doctor or scientist.. I make my living drilling holes in the ground ..or these days teaching others to do it so I might be talking a load of b0llocks
Was it not the Fastnet sailors who took a hammering when they were lifted vertically from the water after prolonged immersion and died from hypovoleamic (spelling??) shock?
Steve