Great Barrier Reef - Agincourt Reef

The Great Barrier Reef is one of the seven wonders of the natural world being the largest coral reef system in the world composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres over an area of approximately 344,400 square kilometres.t is the only living thing visible from space.
This shot was taken from a helicopter over Agincourt reef which is on the edge of the continental shelf.