For more:
https://news.cgtn.com/news/2022-02-14/-Blue-tears-light-up-waters-of-SE-China-beach-17DWCXGY8oM/index.html
A natural phenomenon called "blue tears" illuminated the waters off the coast of Xiamen City, southeast #China's Fujian Province on Saturday.
The blue tears are the result of a chemical reaction called #bioluminescence. It occurs when "#sea sparkles," also known as noctiluca scintillans, glow blue when disturbed by swimmers, waves or passing boats.
Although they can create scenic splendor, they are a form of red tide that can harm marine life.
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