Mongabay: A new report from Oceana shows that action taken now to curb ocean acidification would not only preserve the world’s coral reefs, but also save billions in lost revenue in the fishing and tourism industries. Acidification of the oceans, a result of increasing carbon dioxide emissions, threatens marine animals with calcium carbonate skeleton and shells, such as crabs, lobsters, clams, oysters, and coral. A lower pH makes it more difficult for these animals to produce the shells and …