Acidified ocean water: terrible news for oysters, clams, and hermit crabs. Not to mention the entire ocean food chain and life on earth as we know it. From the Seattle Times:
Seattle researchers were stunned to discover that vast swaths of acidified sea water are already showing up along the Pacific Coast as carbon dioxide from power plants, cars and factories mixes into the ocean.
Acidified ocean water can be fatal to some fish eggs and larvae. It also interferes with the formation of shells and skeletons, harming corals, clams, oysters, mussels and the tiny plankton that are the basis of the marine food web.