Estuaries are places where freshwater rivers and streams flow into the ocean, mixing with the seawater. A wide variety of birds, fish, and other wildlife make estuaries their home. People also live, fish, swim, and enjoy nature in estuaries and the lands surrounding them.

Use this Web site to explore these unique environments, including some of the plants and animals that live there. Through a variety of games and activities, you’ll learn how you can help protect these natural treasures. You’ll also learn how the U.S. Environmental Protection Agency is working to restore and protect estuaries through the National Estuary Program.