Saturday 14 December 2019
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Great Barrier Reef annual mass coral spawning begins

A mass coral spawning has begun on Australia s Great Barrier Reef, with early indications the annual event could be among the biggest in recent years, local marine biologists said Sunday. Buffeted by climate change-induced rising sea temperatures and coral bleaching, the world s largest reef system goes into a frenzy once a year with a mass release of coral eggs and sperm that is synchronised to increase the chances of fertilisation. Marine biologist Pablo Cogollos, from Cairns-based tour operator Sunlover Reef Cruises, said the first night of the 2019 spawning was notably prolific in a positive sign for the under-threat ecosystem. There was three times the volume of eggs and sperm compared to last year, when the soft corals spawned four nights after the full moon and it was deemed to be the best coral spawn in five years, he said. The natural wonder, which has been likened to underwater fireworks or a snowstorm, occurs just once a year in specific conditions: after a full moon ...


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