Wendy M. Larimore
Sanibel Island FL – The World’s Best Shelling Beaches
Sanibel Captiva Map. Sanibel island has 15 miles of beaches, 22 miles of bike paths, abundant wildlife and the largest undeveloped mangrove ecosystem in the country. So there’s more to Sanibel island than just shells! Well, not technically. The island is actually made of shells.