The Great Barrier Reef is the
world's largest coral reef system composed of over 2,900 individual reefs and
900 islands stretching for over 2,300 kilometres (1,400 mi) over an area
of approximately 344,400 square kilometres (133,000 sq mi). The reef
is located in the Coral Sea, off the coast of Queensland, Australia.
The Barrier Reef:
From a glass-bottom boat:
