re abyss breathing fluids in article c t k cck coventry ac uk enf cck coventry ac uk achurist writes i believe the reason is that the lung diaphram gets too tired to pump the liquid in and out and simply stops breathing after minutes so if your in the vehicle ready to go they better not put you on hold or else that s about it remember a liquid is several more times as dense as a gas by its very nature i think depending on the gas and liquid comparision of course could you use some sort of mechanical chest compression as an aid sorta like the portable iron lung put some sort of flex tubing around the aquanauts chest cyclically compress it and it will push enough on the chest wall to support breathing you d have to trust your breather but in space you have to trust your suit anyway pat
