Ocean Acidiification is happening and it is a BIG problem for sealife.

Acidification wasn’t supposed to start doing its damage until much later this century.

Instead, changing sea chemistry already has killed billions of oysters along the Washington coast and at a hatchery that draws water from Hood Canal. It’s helping destroy mussels on some Northwest shores. It is a suspect in the softening of clam shells and in the death of baby scallops. It is dissolving a tiny plankton species eaten by many ocean creatures, from auklets and puffins to fish and whales — and that had not been expected for another 25 years.

And this is just the beginning.

http://zandarvts.blogspot.ca/2013/09/inexorable-as-tides.html