Humans absorb oxygen from air in the lungs, fine.
If you put water in the lungs the dissolved oxygen in the water somehow(?) doesn’t get absorbed, fine.
But, somehow(?) fish can absorb oxygen from water.
OK? How come human lungs can’t absorb oxygen from water but fish gills can absorb oxygen from water?
It’s literally just diffusion?
**EDIT: This thread is cancer. I will try to find the answer somewhere else. Turning off replies.**
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Fish gills are like sheets, and when they are not in water then they stick together, causing them to suffocate.
Human lungs don’t have the efficiency to move water past, absorb air, and then cycle more fresh water.
Basically lungs are less efficient so we need straight air, but the more efficient gils fail when dry.
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