2021/04/16
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Previous Red Tide Occurrences

 

Click on the week for red tide occurrences during that period in the past month

> 2021/04/01 - 2021/04/09

> 2021/03/26 - 2021/04/01

> 2021/03/19 - 2021/03/26

> 2021/03/12 - 2021/03/19

 
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Overview of the period 2021/04/01 - 2021/04/09     

     Two red tides have been sighted over the past week, an inter-departmental red tide working group reported today (April 9).

     The first red tide was spotted by staff of the Leisure and Cultural Services Department on April 5 at Silver Mine Bay Beach, Lantau Island. The second red tide was spotted by staff of the Environmental Protection Department at Discovery Bay today.

     Both red tides still persist. No associated fish deaths have been reported as at today.

     A spokesman for the working group said, "Both red tides were formed by Takayama tuberculata, which is not common in Hong Kong waters and non-toxic."

     The Agriculture, Fisheries and Conservation Department (AFCD) urged mariculturists at the fish culture zones of Ma Wan and Cheung Sha 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 monitoring 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: 2021/04/09 noon

 

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Overview of the period 2021/03/26 - 2021/04/01     

     Two red tides have been sighted over the past week, an inter-departmental red tide working group reported today (Apr 1).
     
     The first red tide was spotted by an oyster famer on Mar 26 at Deep Bay. The second red tide was spotted by staff of the Environmental Protection Department on Mar 29 at Chung Hom Kok Beach, Hong Kong Island.

     The red tide in Deep Bay still persists while the other case at Chung Hom Kok Beach has dissipated. No fish deaths associated with the two red tides have been reported as at today.

     A spokesman for the working group said, "The red tide in Deep Bay was formed by Takayama tuberculata which is not common in Hong Kong waters, while the red tide in Chung Hom Kok Beach was formed by Noctiluca scintillans which is common in Hong Kong waters. Both algae are non-toxic."

     The Agriculture, Fisheries and Conservation Department (AFCD) urged mariculturists at the fish culture zones of Lo Tik Wan, Sok Kwu Wan and Po Toi and related oyster farmers at Deep Bay 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 monitoring 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: 2021/04/01 noon

 

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Overview of the period 2021/03/19 - 2021/03/26     

No red tide was reported during this week.


Last update: 2021/03/26 noon

 

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Overview of the period 2021/03/12 - 2021/03/19     

     A red tide was sighted over the past week, an inter-departmental red tide working group reported today (March 19).
     
     The red tide was spotted by a mariculturist on March 15 at O Pui Tong, including O Pui Tong fish culture zone. The red tide still persists and no associated death of fish has been reported.

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

     The Agriculture, Fisheries and Conservation Department (AFCD) urged mariculturists at Ap Chau, Kat O, O Pui Tong, Sai Lau Kong and Sha Tau Kok fish culture zone 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 monitoring 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: 2021/03/19 noon

 

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