Few travel experiences capture the essence of tropical Queensland quite like a day out on the Great Barrier Reef. Great Adventures Reef King alongside at Green Island ©Justin Merrigan For visitors departing Cairns, Great Adventures’ combined Green Island and Outer Reef tour offers a taste of both island tranquillity and open-ocean adventure — and, from an industry perspective, an impressive display of operational precision. Aboard Reef King Our day began aboard Reef King , o