Volunteer nature and bird guides are available 9:00 a.m. to 12:00 p.m. Boardwalk is open daily dawn to dusk. From I-75 or U.S. 41 to 951 south toward Marco Island. After crossing U.S. 41, continue for approximately three miles and turn right onto Shell Island Road. Continue one mile on the right, park in front of the building and then take the path on the right to meet your guide at the back of the building. Times and days subject to change. Weather permitting. Bring a hat, water and wear sunscreen. For more information call (239) 262-0304. Held daily.