The vast majority of the earth's oxygen comes from ocean borne algae not forests.
The fact that ocean ecosystems are already failing to support some life forms needs to be taken seriously.
This is one situation where we cannot cry “Fix It!, Fix It!, Fix It!” after it happens and expect to then resume our lives after a brief curative month or year like nothing is wrong.
Make a choice.
(If you want the source article on oysters just yahoo or google)