Great Barrier Reef 'economic dilemma' in Australia
13 August 2014 Last updated at 15:33 BST
The outlook for Australia's Great Barrier Reef is poor despite conservation efforts, a new report says.
The bleak report said that climate change is the biggest threat along with poor water quality from land-based run-off, coastal development and fishing.
The BBC's environment correspondent Matt McGrath said the Great Barrier Reef posed a "difficult economic dilemma" for the Australian government.