Netarts Bay in Oregon is a 'canary in the coal mine' for oyster not being able to survive the increasing acidification of the oceans due to increases in CO2. They would be extinct there, but for an intensive effort by the local government to raise the young in protected ponds until they have passed through a critical, acid sensitive period of their development. It is happening earlier there than the rest of the world due to local currents making water more acidic than normal there. The journal Science has good articles about it.
