FREE GUIDED NATURE WALKS: Three great locations. BRIGGS BOARDWALK (Naples, toward Marco Island) Open year round from dawn to dusk. Volunteers man the walk seven days a week from January through March, 9am to 12 noon, except in inclement weather. The half-mile boardwalk is a self-directed nature trail passing through six ecological communities from scrub to brackish ponds. Signs along the walk describe the flora and fauna in each community. Volunteers help visitors spot and identify plants, birds and other animals and provide a spotting scope on an elevated observation platform overlooking brackish ponds. The walk is a Great Florida Birding Trail site. Click here to view photos of Briggs Boardwalk features. Directions: From US-41/I-75: US-41 (Tamiami Trail) East to 951 (Collier Blvd.) South. From I-75, Exit 101, Collier Blvd. South toward Marco Island. Continue on 951 for 2.7 miles from the US-41/951 junction. Turn right on Shell Island Rd. and go one mile until you reach a building on the right with a flag pole. Park in front of the building and take the path on the right to enter the walk at the back of the building. Please, do not enter or go toward private building. CLAM PASS, Naples Free guided walks run December – April on the boardwalk, bay, and beach. Learn importance of mangrove trees, some Florida history, and meet fascinating creatures and plants that share habitat. Wear sun protection. Located west of Waldorf Astoria on Seagate Drive, west of US-41. Free parking with beach sticker. Meet volunteer guide at tram stop at 9 AM. Approximately 2 hours. Click here to see photos of native plants and wildlife taken at Clam Pass. TIGERTAIL BEACH, Marco Island Select dates January – April. Listed as Site #73 on the "Great Florida Birding Trail." Meet your volunteer guides at the Kiosk at Tigertail Beach Monday-Friday at 8:30 AM. Directions: US-41 (Tamiami Trail) to 951 (Collier Blvd) South to Marco Island. Turn right on Kendall Court, the fifth light after crossing the bridge to Marco Island. Turn left at four-way stop sign at Hernando Court to Tigertail Beach. Free parking with beach sticker; otherwise subject to county parking fee.