Shore excursions in the Caribbean can be as tame as an island bus tour or as thrilling as a ride through a rain forest canopy. If you are a diver, many Caribbean islands -- particularly Grand Turk, St. Thomas, Tortola, Grand Cayman, and Bonaire -- are nearby some of the most vibrant of Caribbean coral reefs. Golfers will find a surfeit of riches in the Dominican Republic and Puerto Rico. Budding sailors will be entranced by St. Maarten's World Cup Challenge, one of the most popular shore excursions in the entire Caribbean region. Another very popular excursion is the chance to touch and play with the sting rays off the shores of Grand Cayman. The most popular excursions sell out quickly, so make your arrangments before the cruise even launches.