Dauphin Island, Alabama is a small town on the Gulf Coast with the same name. Public Beach is a popular spot for its white sand beaches. Mobile Bay's 19th-century Fort Gaines is located at the entrance. It has original cannons as well as a blacksmith shop. The Audubon Bird Sanctuary has a forest, dunes, and swamp where you can see migrating birds. The Estuarium at Dauphin Island Sea Lab has aquariums and a boardwalk that is a living marsh.