One of Australia’s most remarkable natural gifts, the Great Barrier Reef is blessed with the breathtaking beauty of the world’s largest coral reef. The reef contains an abundance of marine life and comprises of over 3000 individual reef systems and coral cays and literally hundreds of picturesque tropical islands with some of the worlds most beautiful sun-soaked, golden beaches. The Great Barrier Reef is one of the seven wonders of the natural world, and pulling away from it, and viewing it from a greater distance, you can understand why. It is larger than the Great Wall of China and the only living thing on earth visible from space.

The Great Barrier Reef is the only living organic collective visible from Earth’s orbit. The Great Barrier Reef, off the east coast of Australia, is one of the wonders of the natural world – it is the world’s largest coral reef ecosystem. It was declared a World Heritage area in 1981 and added to the National Heritage List in 2007. The reef is scattered with beautiful islands and idyllic coral cays and covers more than 300,000 square kilometres. The Great Barrier Reef system consists of more than 3000 reefs which range in size from 1 hectare to over 10,000 hectares in area. Dunk Island is one of more than 600 islands of the Great Barrier Reef.

Human activity in the Reef areas has led to increased pollutants and the reef has suffered damage. Protecting the Reef is the responsibility of the Marine Park Authority. In 2003, the previous Australian Government and Queensland Governments, in partnership with a wide range of industry and community groups, developed the Reef Water Quality Protection Reef Plan  as a combined effort to protect the Reef. Of particular concern is wetlands – which have decreased by over 50 per cent since European settlement. The Great Barrier Reef Coastal Wetlands Protection Program is developing measures for the long term conservation and management of priority wetlands.

Corals  make up the various reefs and cays. These are the basis for the great variety of sea and animal life in the Reef. Coral consists of individual coral polyps – tiny live creatures which join together to form colonies. Each polyp lives inside a shell of aragonite, a type of calcium carbonate which is the hard shell we recognise as coral. The polyps join together to create forests of coloured coral in interesting fan, antler, brain and plate shapes. The ideal environment for coral is shallow warm water where there is a lot of water movement, plenty of light, where the water is salty and low in nutrients. There are many different types of coral, some are slow growing and live to be hundreds of years old, others are faster growing. The colours of coral are created by algae. Only live coral is coloured. Dead coral is white.