Carbon Dioxide is a well-known greenhouse gas that’s being released into the atmosphere through our own activities and is driving much of the warming our planet is experiencing. Our planet’s oceans try to balance out the amount of carbon in the air and the carbon that they store by soaking it up, making them our biggest sink for CO2. Unfortunately, Carbon Dioxide react with water to form carbonic acid. Our oceans have a pH around 8.2, making them alkaline, but this carbonic acid is causing our oceans pH to drop at an alarming rate. It’s predicted that by the end of the century it could drop to a pH of nearly 7.6, near acidic levels, and it will continue to drop well after that. Life in our oceans has evolved under alkaline conditions and depend on it for their survival. If our planet’s oceans drop below a pH of 7 and become acidic, most forms of life will be affected one way or another, but especially those that depend on calcium carbonate for their survival. Coral produce calcium carbonate skeletons, which reacts with carbonis acid causing them to break down over time.