From National Geographic: Exploring Oceans: Great Barrier Reef
The largest living structure, the Great Barrier Reef spans more than 1,200 miles (2,000 km) of islands and submerged reefs:
http://www.youtube.com/watch?v=wbNeIn3vVKM
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From National Geographic: New Species Found at Great Barrier Reef
In and around Australia’s Great Barrier Reef, researchers with the Census of Marine Life have discovered hundreds of new species.
http://www.youtube.com/watch?v=uFo-H5g6EJo
From The Travel Channel: Australia’s Great Barrier Reef
Shane O takes a dive into one of the seven natural wonders of the world, Australia’s Great Barrier Reef:
http://www.youtube.com/watch?v=yw_WjN-4n3U
