Green Island is a tropical island paradise on Australia’s Great Barrier Reef. Big Cat Green Island Reef Cruises offers full and half day reef cruises departing daily from Cairns at 9am, 11am & 1pm. Activities that are offered include snorkelling, diving, glass bottom boat and semi-submarine coral viewing tours, relaxing on the beach and exploring Green Island National Park. Transfers are by modern air-conditioned catamaran.