With lively restaurants, white-sand beaches, ever-expanding resorts and a natural harbor, Grand Baie is fertile tourist ground. Located on the northwest coast of Mauritius, its fashion and craft shops appeal to landlubbers, while swimming, sailing and windsurfing enthusiasts frolic in the emerald Indian Ocean. Glass-bottom boat trips provide a window on the underwater world, but for a one-of-a-kind experience, board a two-person submarine and cruise beneath the surface with the tropical fish.