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Officials killing off coral-eating starfish in Great Barrier Reef

Officials killing off coral-eating starfish in Great Barrier Reef
From CBC - January 5, 2018

A major outbreak of coral-eating starfish has been found munching Australia's world heritage-listed Great Barrier Reef, scientists said on Friday, prompting the government to begin culling the spiky marine animals.

The predatory crown of thorns starfish feeds on corals by spreading its stomach over them and using digestive enzymes to liquefy tissue. This outbreak hits as the reef is still reeling from two consecutive years of major coral bleaching.

"Each starfish eats about its body diameter a night, and so over time that mounts up very significantly," Hugh Sweatman, a senior research scientist at the Australian Institute of Marine Science told Australian Broadcasting Corporation (ABC) radio.

"A lot of coral will be lost," he said.

That would be a blow for both the ecosystem and the lucrative tourism industry it supports.

The crown of thorns were found in plague proportions last month in the Swains Reefs, at the southern edge of the Great Barrier Reef, by researchers from the reef's Marine Park Authority, a spokeswoman for the authority told Reuters by phone.

The remote reefs, about 200 kilometres offshore from Yeppoon, a holiday and fishing town roughly 500 kilometres north of Queensland state capital, Brisbane, are well south of the most-visited sections of the Great Barrier Reef, where most culling efforts are focused.

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