Long time no see. Where have you been? I spent the last six months in Australia. It was so great, I had a wonderful time. The best bit was snorkelling at the Great Barrier Reef. The sea life there is out of the world. The Great Barrier Reef is the only living organic collective visible from Earth's orbit. It's one of the wonders of the natural world. And it's the world's largest coral reef ecosystem. There are loads of beautiful islands scattered around and idyllic coral cays. It's pretty big, isn't it? I think it covers more than 300,000 square kilometres. Yes, it's huge. There are more than 3,000 reefs, which vary in size. The smallest is about one hectare. But the biggest is massive, over 10,000 hectares. Wow! Unfortunately because many tourists go there, it's suffering. You know, because of the pollutants. Unfortunately, that's true. Its protection is the responsibility of the Marine Park Authority, they have developed something called "The Reef Plan". This is a combined effort to protect the reef.