Re: Need answer to something I've always Wondered About
I think our lungs are accustom to a curtain surface level pressure then, for every foot below the suface level you add between 0.43 - 0.445 or 7. psi depending on salinity; At 3' below surface level in saltwater you have a additinal 1.33 psi working against you.
That would be like exhaling all the air out of your lungs, then wrapping your chest in a elastic ACE bandage then trying to breath
1955 Blanchard 51 Custom ( I got a woody )
On the 8th day God created sailors and evil stood at attention