Ocean acidification is the direct result of Carbon gas build up in our atmosphere. Acidification is an enormous threat to the entire oceanic food chain. It kills phytoplankton (the source of 50% of our Oxygen) and the primary food of krill, which are also being killed as their shells are dissolved by acidity. Soon clams, oysters, crabs, lobsters and other crustaceans could become extremely rare as acidity dissolved their shells as well. There are already huge areas of our oceans which a growing dead zones, void of life.
Ocean acidification is not a matter of opinion, it is a matter of the direst consequences. It is an ontological threat to all oceanic life forms and to our own continued survival as well.