a large, low, wet region in the southern part of the US state of Florida. Some Seminole Native Americans still live there. There are alligators (= large reptiles) and many varieties of birds and snakes there. Its area is about 5 000 square miles/12 950 square kilometres. Dry weather has recently damaged parts of the Everglades, and there is concern about the region's future. The Everglades National Park was created in 1947 and made a World Heritage Site in 1979.