Surprise! Another Massive Reef Is Hiding Behind the Great Barrier Reef

Behind Australia's iconic Great Barrier Reef hides another large, doughnut-shaped reef, according to a recent study. Using laser data from the Royal Australian Navy, scientists found a large field of unusual circular mounds behind the familiar Great Barrier Reef. "We've known about these geological structures in the northern Great Barrier Reef since the 1970s and '80s, but never before has the true nature of their shape, size and vast scale been revealed," Robin Beaman, a research fellow at Jame