Spending the past year and a half doing travel photography in the Caribbean islands allows one to spend time on Cays.  A cay is a small typically uninhabited offshore island, many of the cays near St. John are perfect for a picnic day trip via kayak.  Cays are formed when when ocean currents transport lose sediment across the surface of a reef. One of my favorite Cays in the Virgin Islands is Whistling Cay, home to many pelicans and a Colonial-era guardhouse. Whistling Cay resembles the islet above.