Take the Great Adventure catamaran to Green Island at Keynesian Wharf for about an hour. There is a diving instructor on board who introduces the diving project on Green Island and can pay for it. Green Island is an island on the Great Barrier Reef where living coral colonies coexist with tropical rain forests. The island has a beautiful environment, free of charge by glass boat, snorkeling, deep diving, helicopter, freshwater swimming pool and cafeteria.