Share on email is underway — the second in the past decade, indicates global warming 's ocean impact is worsening, scientists say. But all hope is not lost.At stake is the fate of everything from the health of national economies to the availability of experimental treatments for cancer.When water is too warm, corals expel algae that live in their tissues and give them their vibrant colors. This process causes them to turn a ghostly white.
Coral reef health also connects humans to the sea, and the vast knowledge and beauty that lay beneath the surface. The index reached 54%, and is increasing by about 1% each week, Manzello said. The trend is being driven by more than a year of record warm global ocean temperatures associated with aThe record high for this metric was 56.1%, set during the longest global bleaching event yet observed, which lasted from 2014-2017. The current event is likely to surpass that, he said.
Manzello said that La Niña is not a panacea, noting that as the planet has continued to warm, large coral bleaching events have been observed even in La Niña years.
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