Are your favorite ocean waters on the watch list?
Click on the yellow regions on the map to see why the places you love to swim, fish, or dive are especially vulnerable to rising acidity.
The seafood industry is the third-largest driver of economic activity in Alaska. Alan Parks, a native, depends on the state's teeming waters to stay in business.
Hawaii's unique coral reefs are the foundation of the state's $10 billion-a-year tourism industry. Scientists predict that the more corrosive seas could hasten the disappearance of reefs.
Commercial fisherman Bruce Steele depends on healthy sea urchins to make a living. As oceans turn more acidic, those urchins and other marine animals must adapt to survive.
Something was killing Sue Cudd's baby oysters. She traced the problem to ocean acidification and adapted to stay in business. Here's how she did it.
Gulf of Mexico
Red snapper, shrimp and shelled creatures face an uncertain future as seawater in the Gulf becomes more acidic. Nutrient pollution and increasing carbon emissions are accelerating the problem.
Without healthy coral reefs, the $5.5 billion in annual recreation income that they generate for Florida is diminished -- along with 70,000 jobs.
In many East Coast estuaries, oysters, mussels and clams are getting a double-dose of carbon dioxide. Long Islander Mike Martinsen worries about the impact on his shellfish company.
Gulf of Maine
Polluted runoff and fossil fuel emissions threaten the lobsters, oysters, bay scallops and mussels that support New England's iconic fishing communities.
The Acid Test
Watch Sigourney Weaver explain how we are conducting the world's largest chemistry experiment and what this could mean for ocean health.
Photo Credits: Pteropod: Brian J. Skerry / National Geographic Creative; Hand with baby oysters: Benjamin Drummond / bdsjs.com; Alaska salmon, Gulf of Maine lobster, and Eastern Estuaries mussels: © B. Guild Gillespie / www.chartingnature.com; Photo of Sue Cudd for Pacific Northwest: Eric Scigliano for OnEarth.org; Gulf of Mexico red snapper: © Flick Ford