Previous Red Tide Occurrences
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Click on the week for red tide occurrences during that period in the past month Overview of the period 2026/04/30 - 2026/05/08 Three red tides were sighted during the past week, the Inter-departmental Red Tide Working Group reported today (May 8). On April 30, the public spotted the first red tide at Stanley Bay, Hong Kong Island. Another two red tides were spotted at inner port shelter near Sharp Island and Silverstrand Beach in Sai Kung, on May 3 and 6 respectively by staff of the Agriculture, Fisheries and Conservation Department (AFCD) and Leisure and Culture Services Department. All the red tides have dissipated. No associated fish deaths have been reported as of today. A spokesman for the working group said, "The three red tides were formed by Noctiluca scintillans, which is commonly found in Hong Kong waters and non-toxic." The AFCD urged mariculturists at the fish culture zones of Lo Tik Wan, Sok Kwu Wan, Po Toi, Ma Nam Wat, Kau Sai, Kai Lung Wan, Tai Tau Chau, Leung Shuen Wan and Tiu Cham Wan to monitor the situation closely and increase aeration where necessary. 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. Last update: 2026/05/08 noon ------------------------------------------------------------------------------- Overview of the period 2026/04/24 - 2026/04/30 No red tide was reported during this week. Last update: 2026/04/30 noon -------------------------------------------------------------------------------- Overview of the period 2026/04/17 - 2026/04/24 No red tide was reported during this week. Last update: 2026/04/24 noon -------------------------------------------------------------------------------- Overview of the period 2026/04/10 - 2026/04/17 No red tide was reported during this week. Last update: 2026/04/17 noon -------------------------------------------------------------------------------- |
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