This symposium moves beyond scientific findings to highlight current measures and recommend additional actions to advance the management of ocean resources in the face of ocean acidification. A major challenge facing both the scientific and policy communities is how to mitigate and adapt to the impacts of increased atmospheric carbon dioxide. Among the potential effects of increased carbon dioxide emissions is its uptake by the oceans and the resultant decrease in seawater pH, a process known as ocean acidification. Scientists are only beginning to investigate this process; however, the potential effects of ocean acidification point to many environmental and socioeconomic consequences. These impacts, along with other effects of greenhouse gas emissions and climate change, are already influencing decisions by federal and state agencies regarding fisheries management, ecosystem restoration, coral reef protection, protected species management, and other living marine resource management.