Fertilization begins on the Great Barrier Reef: corals are recovering

Scientists who worked underwater at that time said that they witnessed how corals

simultaneously began to massively excrete sperm andegg cells. It happened off the coast of Cairns, Queensland. They noted that this is a good sign - the reef was able to recover, despite environmental threats.

Gabriel Guzman / Calypso Productions (CNN)

Australian marine biologist Gareth Phillips togetherwith a team of marine biologists, divers, students and photographers descended to the bottom of the ocean to capture the event. The footage will allow scientists to monitor the coral population, as well as the general state of the Great Barrier Reef, which is protected by UNESCO.

Biologists have noted that corals reproduce by splitting and dividing most of the year, but once a year they simultaneously release bundles of sperm and eggs into the ocean.

Gabriel Guzman / Calypso Productions (CNN)

The Great Barrier Reef is a network of 2,500 reefswhich is located on an area of ​​348 thousand km². It previously suffered from discoloration due to the unusually high temperature of the water. Two-thirds of the corals are under threat.

But now biologists are convinced that the reef continues to live after damage: it has been in the recovery phase for more than 18 months.

Gabriel Guzman / Calypso Productions (CNN)

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