Aerial view of Bora-Bora ringed by reefs

Lacy breakers lap the coral reef that rings Bora-Bora, an ancient sunken volcano 165 miles (266 kilometers) northwest of Tahiti in French Polynesia's Society Islands. Surrounded by sugar-white beaches, an electric-blue lagoon, and some of the clearest water on the planet, Bora-Bora is home to hundreds of species of tropical fish.