Add Yahoo as a preferred source to see more of our stories on Google. The Great Barrier Reef is the world’s largest living structure, so big, it can be seen from space. Photograph by Kieran Stone, ...

What it's like to night dive on the Great Barrier Reef Stretching almost 1,500 miles, the Great Barrier Reef is so vast that just 20% has been surveyed. With tourism funding millions in conservation ...