The biggest attraction on Sanibel Island is wild. Nature lovers from all over the world flock to the J.N. (Ding) Darling National Wildlife Refuge to observe animals and birds native to the Gulf Coast region in their natural habitat. The Refuge maintains bike trails and boardwalks through the mangrove system and tropical canopy, but you can also take a car along the 4-mile Wildlife Drive. Learn more about crocodiles, manatees, egrets and other local fauna at the excellent Visitor's Center, which also organizes exhibits and daily lectures.