Green Island is a true coral cay right on the Great Barrier Reef. The island itself is a national park, and the waters surrounding it are themselves part of the marine national park.
It lies about 27km northeast of Cairns and the trip from Cairns takes about 50 minutes by high speed catamaran.
The island is popular with day trippers who come to snorkel, view the coral from glass-bottomed boats and visit the Underwater Observatory.
This is the oldest attraction of its kind in the world and remains a popular way to get up close to the marine life of the reef.
Visitors to the island can stay at Green Island Resort, a small, eco-friendly resort. Free activities for resort guests include guided walks, fish feeding, water sports and snorkelling.
Photo courtesy of Queensland Tourism.