Scientists from the Catlin Seaview Survey say they've discovered the Great Barrier Reef's deepest corals, over 400 feet beneath the waves.
More than half the coral in Australia's Great Barrier Reef has disappeared since 1985, due to storm damage, crown of thorns starfish and bleaching.
With concern mounting about the future of the Great Barrier Reef, scientists have discovered a natural mechanism that could help save it: volcanoes.
For most of us, the Great Barrier Reef is a bit far away for a visit in person. But a new project, the Catlin Sea Survey, will allow the public to watch every step via YouTube and other Google sites.