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

Two years ago, scientists discovered more than one hundred corals in the Great Barrier Reef and on a reef near northwestern Australia.

VOA: special.2010.08.10

Researchers at the University of Bristol in England discovered similar movements among baby reef fish several years ago.

VOA: special.2010.08.10

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

VOA: special.2009.04.22

Several different species of coral can be present in the different colonies that form the reef structure.

VOA: special.2010.08.10

The Chazy Reef on the island contains coral, like a reef in a warm, tropical ocean.

VOA: special.2009.01.05

Experts say a continuing reduction in coral reef populations will have harmful effects for people worldwide.

VOA: special.2010.08.10

Soft corals do not form reefs, but may be present in a coral reef ecosystem.

VOA: special.2010.08.10

They have urged America to take a position of international leadership in coral reef protection and to take steps to reduce the trade's environmental effects.

VOA: special.2010.08.10

The four-year study looked at the health,diversity and biological make-up of the reef.

VOA: special.2010.08.10

One was silence. The other was the recorded sound of a coral reef.

VOA: special.2010.08.10

Water pollution and visits by careless swimmers and divers also threaten the reef.

VOA: special.2009.04.22

Scientists say this is because when the Chazy Reef began to form hundreds of millions of years ago, it was in the southern half of the world.

VOA: special.2009.01.05

He says some kinds of reef fish are close to disappearing forever.

VOA: special.2010.08.10

This creates the main structure of the coral reef.

VOA: special.2010.08.10

As a result,coral reef populations are decreasing worldwide.

VOA: special.2010.08.10

Rising sea temperatures are greatly harming the reef.

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

The region has the third largest barrier reef in the world.

VOA: standard.2010.05.26

Kacky Andrews,is NOAA's manager for Coral Reef Conservation.

VOA: standard.2010.05.26