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Anonymous
>>253752 Inconsistent units are inconsistent. Previously i used imperial, since i thought this would be more common here. But since you mention meters, i'll stick to SI. Meters <=> feet i can do, psi<=>atm<=>bar<=>Pa not so much... Your calculation is redundant, btw. I guesstimated the height of the channel to be about 1.5m above the top of the aquariums, and then 'calculated' the pressure there (which you now did inversely) and compared that to the altitude at which this pressure occurs in the atmosphere. So of course the pressure difference represents about 1.5m, since that's what i based it on...
I am also aware that fish can dive. However, this would mean increasing the pressure. Decreasing is another question. Consider the case where the tunnel is up higher. In water the maximum would be about 10m, and the pressure would approach vacuum. 10m below sea level is just twice the atmospheric pressure, and obviously fish can cope with that. If they can cope with near vacuum i don't know.
Maybe someone has input as to what would happen to the oxygen level at the top of this tunnel?
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