Explore the beauty of the Great Barrier Reef on a day trip to Green Island from Cairns, including an amazing and easy underwater experience with the Seawalker Helmet Dive! You'll go into the water with your guide and be surrounded by the colorful fish and coral of the Great Barrier Reef, all while keeping your head dry. In addition, you'll have plenty of time to see more sights when snorkeling from the beach, taking a glass-bottom boat cruise or walking in the rainforest.