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Red tides sighted
Friday, February 18, 2005

Three red tides have been sighted in Hong Kong waters in the past few days, an inter-departmental red tide working group reported today (February 18).

Staff of the Environmental Protection Department observed a red tide at Pak Sha Wan and Ma Nam Wat on February 15. The red tide dissipated the following day.

Staff of the Leisure and Cultural Services Department observed a red tide at Trio Beach on February 16. The red flag was hoisted. The red tide dissipated this morning.

The other sighting was observed by Marine Police yesterday at Sai Kung Hoi. The red tide still persists.

All three red tides were formed by Noctiluca scintillans. The species is common in Hong Kong and non-toxic, a spokesman for the working group said.

The Agriculture, Fisheries and Conservation Department (AFCD) has urged mariculturists in the Ma Nam Wat Fish Culture Zone to monitor the situation closely.

Red tide is a natural phenomenon. The AFCD'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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