Overview of Current Week

Overview of the Current Week

2025/02/14 - 2025/02/21

   Two red tides were sighted during the past week, the Inter-departmental Red Tide Working Group reported today (February 21).

    On February 15, staff of the Marine Department spotted a red tide at Sha Tin Hoi to Pak Shek Kok. Another red tide was spotted at Shing Mun River Channel on February 18 by staff of the Environmental Protection Department. Both red tides still persist and no associated fish deaths have been reported as of today.

     A spokesman for the working group said, "The red tide was formed by Asterionellopsis glacialis, which is commonly found in Hong Kong waters and non-toxic."

    Red tide is a natural phenomenon. The AFCD's proactive phytoplankton monitoring programme will continue to monitor red tide occurrences to minimise the impact on the mariculture industry and the public.

Please click here to view the location of red tide sighted in Hong Kong waters.

You can visit the Hong Kong Red Tide Information Network for information about red tide or press here to view real-time water quality in fish culture zones.

Last update: 2025/02/21 noon

Red Tide Reporting Network

We welcome your assistance in reporting red tide to us. Please record the following information:
(1) location of red tide
(2) colour of the seawater
(3) extent of the red tide
(4) occurrence of dead fish and any other abnormal features observed around the red tide.

Please report to:
2150 7124 (office hours) OR 1823 (outside office hours)