 Some restrictions apply. For complete details, please visit OptimaTaxRelief.com. Australia has been warned it needs to do more to protect the Great Barrier Reef. Scott Maiman explains. The warning comes from UNESCO. The UN agencies raised concerns about claims of inaction by the Australian government to look after the Great Barrier Reef. If UNESCO thought that they were doing enough, then they would take it completely off the watch list of the World Health Organization.