Since the dawn of the industrial age, acid levels in the oceans have increased 30 percent. Currently, the oceans are absorbing 22 million tons of carbon dioxide a day.
Among other things, scientists worry that the increase in acidity could interrupt the delicate marine food chain, which ranges from microscopic plankton to whales.
The situation is especially acute along the West Coast...The water in the deep Pacific Ocean is already more acidic than shallower water is because it's absorbed the carbon dioxide that's produced as animals and plants decompose. Some of the deep water in the Pacific hasn't been to the surface for 1,000 or more years.
By the end of the century, that deep water is expected to be 150 percent more acidic than it is now, and as it's brought to the surface by upwelling, it's exposed to even more carbon dioxide. Read Full Artilcle