By Roger Harrabin
BBC News, Belize
Five metres (15ft) below the clear green water of the western Caribbean lie the fractured remains of a coral dome hundreds of years old.
Local scientists say it's now so badly damaged that another hurricane would simply sweep it away.
But they don't primarily blame hurricanes for the damage to the coral here on the Belize Barrier Reef; they blame climate change.
And they are backing a petition pressing the United Nations World Heritage Sites Committee to acknowledge that climate change is already damaging world heritage sites.
The five sites are the Belize Barrier reef, at 321km (200 miles) long, the biggest in the western hemisphere; the Australian barrier reef; and glacier parks in Nepal, Peru and the Rockies where glaciers are disappearing as the climate warms.
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more:
http://news.bbc.co.uk/2/hi/science/nature/5064870.stm