Shell Island, Florida, runs approximately seven-and-a-half miles adjacent to St. Andrew's State Recreational Area. Totally uninhabited by humans and only accessible by boat, Shell Island is a hidden gem for surfers, scuba divers and snorkelers. Because this barrier island is relatively secluded, its guests will be welcomed by pristine sand dunes, flocks of colorful seashells and rare ecological delights preserved from eons past.