12:05World Have Your SayWHYS 30: The end of the Great Barrier Reef?BBC World Service Duration: 25 minutes Tue 2nd Oct 2012, 12:05 on BBC World Service OnlineAvailable for over a yearListen nowYour reaction to the findings by scientists that over half of the Great Barrier Reef in 27 years.GenresNewsFormatsDiscussion & TalkBrandWorld Have Your Say Source: BBC Online