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The Great Barrier Reef is the largest living thing on planet. The reef is so big, in fact, that it's visible from space. But how did Australia's famous reef get so big? And why did it form where it did?
To answer these questions and many more, adventurer Will Gadd joins a team of oceanographers and geologists exploring the deepest parts of the Great Barrier Reef. The journey takes Gadd to Australia's hot interior, where geological clues give the team an impression of the continent's past and deep below the Great Barrier Reef where remnants of an even older reef may lie.
Learn more about oceans and waterways during Planet Green's Blue August
Don't miss the rest of Blue August On TV
Check the Planet Green Schedule to find out when you can watch this great green programming.
Read more about the oceans:
Dive Into Summer With Planet Green's Blue August
9 Ways We Can Save the Ocean, and Save Ourselves
Keep Your Junk out of the Pacific Ocean Trash Vortex
Volunteering with Ocean Conservancy is Perfect for Lovers of the Sea
