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"Investigators from the ARC Centre of Excellence for Coral Reef Studies (CoECRS) consider the reef – the most southerly coral reef yet known – is a harbinger of what could happen again as global CO2 levels and temperatures rise during the 21st century.
'We’ve dated the reef to about 128-125,000 years ago, right in the middle of the last interglacial, or the last period of global warming before our most recent ice age,' says Professor Malcolm McCulloch, deputy director of CoECRS and an earth scientist at The Australian National University.
'The reef lies about 2.5 metres above the current high tide zone, which means that for it to survive and grow, sea levels would have had to be at least 3 to 4 metres higher than at present.
'There is some evidence – still controversial – that sea levels may briefly have been as much as 6 metres higher.'”

You can read the entire report here:

Reef Warns Of Sea Level Rise

Source: Science Daily, November 9, 2006