Hank49
Contributor
Actually, the real question is "how can I learn to hold my breath as long as them or buy a set of gills"
Yeah, that too.
But seriously, if a sperm whale gets into a battle with a giant squid at 2000 feet and stays longer than he wants, barely getting to the surface dropping the pp02 to almost 0, why doesn't the same thing happen? Or maybe it does? Whales wash up on the beach.