In the winter of 2015, rare toxic algal blooms began spreading across Hong Kong waters.
Lee Muk-kam’s floating fish farm in the sheltered bay off Tai Po’s Sam Mun Tsai was one of the mariculture zones hardest hit by the onslaught.
By spring of the following year, 8,000 Sabah groupers, which he had raised from fry, had been wiped out by the oxygen-depleting blooms, also known as “red tides”.
“That was almost a million dollars in losses,” he said, pointing to a...
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