There are seven species of sea turtles in the world, and three of these inhabit the waters of St. John. The two most common are the green and hawksbill turtles, while the leatherback is rarely seen. Sea turtles spend most of their lives in the water only coming ashore to nest. Turtles travel thousands of miles a year. Visit the Sea Turtle Conservancy web site to see where they go. Trunk Bay beach is named after the leatherback turtle because they used to nest there in large numbers. But wait –they are called leatherbacks but the bay was named Trunk Bay. Why? Leatherbacks when on the ocean surface look like a steamer trunk floating so the Danes and locals called them trunk turtles, so the story goes.