The Six Mile Cypress Slough contains over 3,500 acres of wetlands in Fort Myers that is approximately 11 miles long and about a third of a mile wide. It catches and filters rainwater bound for Estero Bay. A boardwalk trail allows visitors to explore the slough and an interpretive center talks about the otters, alligators, turtles, and wading birds that live in the slough year-round. It is home to migratory birds and butterflies and became a preserve in 1970 because of its positive influences on the community and environment.