Analysis suggests the risk of extinction of some species may not be as high as previously thought, but researchers warn local depletion has a devastating impact
A world-first estimate of the number of corals across the expanse of the Pacific Ocean has suggested there are about half a trillion of the reef-building animals.
Researchers say their findings, from an analysis of more than 900 reef sites, shows the risk of extinction of individual coral species is lower than current international assessments.