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Red tide sighting
Friday, August 20, 2004

Two red tides have been sighted in Hong Kong waters in the past few days, an inter-departmental red tide working group reported today (August 20).

The first case at the Ma Wan Fish Culture Zone and its adjacent waters, which is dissipating now, was reported on August 14. The other one at Long Ke Wan and Pak Lap of Sai Kung, reported on August 18, still persists.

"The red tide at Ma Wan was formed by Skeletonema costatum while the one at Long Ke Wan and Pak Lap was formed by Prorocentrum micans. Both are non-toxic and common in Hong Kong waters," a spokesman for the working group said.

Red tide is a natural phenomenon. The Agriculture, Fisheries and Conservation Department's proactive phytoplankton monitoring programme will continue monitoring red tide occurrences to minimise the impact on the mariculture industry and the public.

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