Red mangrove trees line Florida Bay, an estuary of national importance between the Florida Keys and Everglades. Its health depends on the quality and quantity of fresh water flowing south from Everglades National Park, the southern terminus of a watershed that begins in central Florida, near Orlando. Photograph by Carlton Ward Jr / Carlton Ward Photography / www.CarltonWard.com Florida Bay near Everglades City, Florida. Everglades National Park, 10000 Islands. Photograph by Carlton Ward Jr / Carlton Ward Photography / www.CarltonWard.com