Why is it impossible while 5m or more below water to breathe through a hose connected to the surface air, but easy to breathe through a scuba?
In: 158
While scuba diving, everything is pressurised. The air is getting blasted into your lungs. You don’t have to fight for it.
In your hypothetical example of snorkeling tho, you have to suck air all the way down the tube, working against the water pressure. Your diaphram just isn’t that strong. It’d be like sucking on a closed off pipe.
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