1. Great Barrier Reef is the largest coral reef in the world.
2. It is close to the coast of the Queensland in Australia.
3. It 's 2,600 kilometres long.
4. It is made up of nearly 3000 coral reefs and over 600 islands.
5. It has been listed an important World Heritage Site by UNESCO
6. The Great Barrier Reef is the largest structure made by living things
7. It can be seen from outer space.