Sail out to Michaelmas Cay and dive into the world-famous Great Barrier Reef. Experience diving or snorkeling to see the colorful reefs and the unique marine wildlife with your friendly guide! Michaelmas Cay is a natural sandbar within the Michaelmas reef. Within the peaceful lagoon, you will find a garden of coral and various underwater creatures that will welcome you. Let your guide take you to the most picture-perfect spots within the clear blue waters to capture your memorable experience.