Great Barrier Reef is the largest reef system in the world and is located in the Coral Sea off the coast of Queensland in north-east Australia. The reef system comprises nearly 3,000 individual reefs and 900 islands stretching for over 2,600 kilometres and spread over an area of 133,000 square miles. Great Barrier Reef is located in the Coral Sea, off the coast of Queensland in north-east Australia. (more…)