The Conservation Foundations Nature Center encompasses 260 of the over 1,800 total acres owned and managed as a preserve for Florida wildlife, and offers a unique insight into the islands ecosystems. Visitors can walk 4 miles of trails, climb an observation tower, and experience a butterfly exhibit. Inside the Nature Center, a marine-life touch tank, an alligator jawbone, a mangrove diorama, and other exhibits showcase island habitat. The foundation also operates a nature shop, bookstore and native plant nursery, and conducts estuarine research. Guided trail tours, shoreline discovery walks and many other programs are available. Price is $3 for adults; members and children 17 and under are admitted free. Additional charges may apply to other programs. Hours of operation vary with the season: October through May, weekdays, 8:30am to 4:00pm; June through September, weekdays, 8:30am to 3:00pm; and Saturdays from 10:00am to 3:00pm, December through April.