The UN is warning that damage to the world’s oceans is accelerating at an alarming rate and the health our coral reefs is deteriorating rapidly. The Drum reporter Stephanie Boltje visited the Great Barrier Reef to get a first-hand look at what’s happening below the water’s surface. For more from ABC News, click here: https://ab.co/2kd3ALi If you're in Australia, you can watch more ABC News content on iview: https://ab.co/2kKaXKn Subscribe to ABC News In-depth: https://www.youtube.com/c/abcnewsindepth For breaking and trending news, subscribe to ABC News on YouTube: http://ab.co/1svxLVE You can also like us on Facebook: http://facebook.com/abcnews.au Or follow us on Instagram: http://instagram.com/abcnews_au Or even on Twitter: http://twitter.com/abcnews