What is the Anion in Coral?

8/4/22 UPI:

"Aug. 4 (UPI) -- The coral cover in the northern and central sections of the Great Barrier Reef is at its highest amount in at least 36 years, Australian marine scientists announced Thursday."

The primary structural component of coral is CACO3.   If you were paying attention in high school chemistry, you should remember that CO2 combines with CaO to form CaCO3.  The warmer the water, the more CO2 it can hold.  Eventually I expect enough CO2 to be pulled out of the air to make more coral and non-organic carbonates in the deep ocean while the wheat crops get enormous.