The increase of carbon dioxide emissions in the air has not only warmed up the planet by blocking escaping sunlight, it now pollutes the oceans as well. Excess carbon dioxide in the air combines with Earth’s water to form carbonic acid. While the ocean is a base, introducing an acid will reduce its ph level. For 300 million years the pH level of the ocean has averaged to 8.2, has now been brought down to 8.1.
