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Two red tides sighted
Friday, November 19, 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 (November 19).

Marine police observed an occurrence stretching from Steep Island to Fat Tong Mun and another from Ham Tin Wan to Tai Long Wan on November 14. Both of them dissipated the following day.

The red tides were formed by Trichodesmium erythraeum which is rare in Hong Kong waters. Though it might cause itching and burning upon contact with the skin as reported elsewhere, no such reports have been recorded in Hong Kong," a spokesman for the working group said.

"The Agriculture, Fisheries and Conservation Department (AFCD) has informed mariculturists in Tung Lung Chau and Po Toi O fish culture zones of the red tide and urged them to monitor the situation closely," he said.

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.

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