Put on your snorkel gear and dive into Hawaii's spectacular underwater world for an excursion you will never forget. The crystal clear water is so warm, and the wildlife so abundant, that you will feel like you are swimming in an aquarium. Say hello to the green sea turtles, wave to the colorful schools of fish, and marvel at the unique coral.

You will see tons of fish in amazing colors, and some of them are so curious that they'll even swim right up to your mask and check you out. The bright sunlight turns the coral reef into a fairy-tale world, shining in all the hues of the rainbow. It's truly astonishing.

Oahu is home to many prime snorkeling areas. Starting with the beautiful nature preserve at Hanauma Bay (virtual tour) State Underwater Park, there is also the fabulous Kewalo Reef near Diamond Head (virtual tour), and the un-crowded North Shore. All are safe and fun playgrounds for snorkel fans of any skill level.

Choose from the tour well in advance. Snorkeling tours usually sell out quickly, so make your reservations early.