Comment Normal Ocean pH Range: 7.7 - 8.2 (Score 1) 90
Normal range for sea water pH is 7.7-8.2, varying day to day and depending on the time of day, measured in one place:
https://web.archive.org/web/20...
The min/max range measured across different locations will be greater.
It is also worth noting that sea creatures evolved shells back in the Cambrian era, some 500M years ago - when atmospheric CO2 levels were 10-20x higher than they are today. So it seems we need less alarmism and hyperbole and more science.