Press Releases
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Two red tide sightings Two red tides have been sighted in Hong Kong waters, an inter-departmental red tide working group reported today (September 11). A spokesman for the working group said a red tide was observed by staff of the Environmental Protection Department at Sha Tau Kok Hoi on September 8. The red tide had dissipated by this morning. Another red tide was observed by staff of the Agriculture, Fisheries and Conservation Department (AFCD) at Cheung Sha Wan fish culture zone on September 10. It still persists today. The two red tides were formed by Thalassiosira nordenskioeldii. The species is relatively rare in Hong Kong waters and is non-toxic. The AFCD has informed mariculturists of Sha Tau Kok and Cheung Sha Wan fish culture zones about the occurrence of red tide and reminded them of the possibility of oxygen depletion in the water. No associated fish kill was reported. 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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