yeah, it's incredible down there, racheljones has worked in these waters for 18 months now. marine park authorities have rewarded her efforts by giving her master reef guide status. so tell me what the health of the reef we saw down there today. it's very healthy. it's just so much diversity here. i mean, up there suggested 900 years old. so it's just coral that's died off and built up over time. what are some of the main threats facing the great barrier reef? so we're all aware of the threats of the reef, you know, the rising sea surface temperatures, ocean acidification. we're all aware of it. but we need as many people as we can to see the great barrier reef because they're going to fall in love with it as you have. and then they go home and protect the great barrier reef and all the reefs in the world. but then if more people are coming here, there's more people flying and therefore more carbon emissions. isn't that bad for the reef? we need as many people as we can to see the reef. and, you know, they can choose sustainable options. and every person that visits the grea