Under The Sea: The Great Barrier Reef

Over 2600km in length, a natural wonder of the natural world, the biggest living organism on the planet and the only living thing you can see from space; it is the Great Barrier Reef. One of the most amazing places on earth. Now, adventurer Iolo Williams is living his lifetime dream of diving on the reef and finding out how healthy the reef is at a critical time in its history. He’ll see amazing wildlife: turtles, sharks, sea snakes and huge stingrays. He’ll travel from north to south stopping off at key points to dive down amongst all the wonderful wildlife and coral.