The non-toxic phytoplankton is not considered harmful and is relatively common in Hong Kong. What is uncommon is capturing its iridescent glow on camera, which only appears when the water is disturbed.
Local photographer Lit Wai Kwong also took an image of the phenomena at Tai Po in Hong Kong’s New Territories.
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“They use up the nutrients or the temperature might change, and so the population doesn’t grow as quickly, so usually it will just dissipate.”
