Containing almost 30,000 acres of estuarine habitat, uplands, open water, mudflats, salt ponds, and salt marshes, including much of southern San Francisco Bay, Don Edwards San Francisco Bay National Wildlife Refuge provides habitat for many wildlife. Its purpose is to protect wildlife habitat for endangered species and migratory birds, and to offer opportunities for nature study. Both the EEC and Visitor Center are currently closed to the public; however, outside programs are still planned regularly, and the trails are open for the public to enjoy.Don Edwards San Francisco Bay National Wildlife Refuge is part of the San Francisco Bay National Wildlife Refuge Complex and is administered by the US Fish & Wildlife Service.