For example, the Great Barrier Reef in Australia is the largest coral reef system in the world.

VOA: special.2009.04.22

Federal health minister,Nicola Roxon, says forcing the vessel to cancel a planned 10-day trip around the Great Barrier Reef is a necessary precaution.

VOA: standard.2009.05.30

Some places like Australia's Great Barrier Reef and Montana's Glacier National Park are threatened by the effects of climate change.

VOA: special.2009.04.22