@rsnyderi7 the metabolic oxygen demands of warm-blooded mammals are an order of magnitude higher than those of cold-blooded fishes.?

@rsnyderi7 it's a jacket with an air bladder that allows you to control your bouyancy in the water right?

@idunni8 ?Fake. scientifically impossible.

@idunni8 It is scientifically impossible.

@dschmidtib You would have to process a half-ton of water a minute - about 130 gallons to extract enough oxygen through a pervaporative membrane to maintain a single person's breathing demands.