Big Cat Green Island Cruises are a locally Owned & Operated business that have been taking visitors to Green Island for years. Green Island Great Barrier Reef Tours are one of the most popular things to do whilst in Cairns. Only 45 minutes from Cairns, this tropical Island is a beautiful coral cay on Australia’s Great Barrier Reef with unique island rainforests, surrounded by white sandy beaches & magnificent coral reefs and abundant marine life. Big Cat offer 4 x different departures, either full day or half day. Snorkel, dive and swim in the clear island waters, view the spectacular reef on one of our Glass bottom boats or Semi Submarine coral viewing tours or even explore the Island National Park and simply lay back and relax on the white sandy beach.