Weekly HAB Bulletin


Customer Feedback Survey

We are currently involved in the PRIMROSE project which aims to improve the content and readability of the current HABs Bulletin reports and we would appreciate your feedback on the reports and how you are currently using the information and what you as user would like to see in the bulletins.

All feedback and your time in completing the survey is greatly appreciated and will assist us in improving the reports further.

The survey is available here.

Further information on the PRIMROSE project is available at www.shellfish-safety.eu.


Our HAB Bulletins provide information on the potential development of toxic and/or harmful phytoplankton.

Browse our latest weekly HAB Bulletins below

If the viewer does not load in Google Chrome, please click the eye icon in the search bar followed by "site not working" and allow third party cookies


View our bulletins from previous years below:



View daily forecast of water movement off SW coast Ireland (3-day model forecast)

Satellite data (surface chlorophyll) processed by the MI and used in the bulletin comes from data products developed by Ifremer/ DYNECO and CERSAT in Brest and NASA 

 Picture showing the colours of Algal Blooms at sea. Photo credits: See list below image

Photo credits:

Source: http://www.jodc.go.jp/info/ioc_doc/Other/FINAL_GEOHAB_Eutro_corrected.pdf

  • Large blooms of Karenia brevis occurred in Florida, USA during 2005, resulting in large fish kills. Photos: C. Heil.
  • Foams of the haptophytes, Phaeocystis may be caused by the exudation of protein-rich foams by the algae. Photo: V. Rousseau, courtesy of the EUROHAB Science Initiative, 1999.The change in N:P ratio is related to Phaeocystis blooms in Dutch coastal waters. From Anderson et al. 2002, based on Riegman, 1995.
  • Alexandrium taylori bloom, Catalan coast of Spain. Photo: M. Estrada.
  • Karenia mikimotoi bloom, East China Sea, summer 2005. Photo: J. Li.
  • Noctiluca bloom, Hood Canal, Washington, USA, Summer 2005. Photo: W. Palsson, WDFW.
  • Dinophysis bloom in coastal Norway. Photo: Havforskningsinstituttet, Institute of Marine Research.

Source: NOAA, http://www.chbr.noaa.gov/pmn/image_gallery_bloom.aspx

  • Karenia brevis 'red tide' off North Carolina coast, 1987. Photo: Unknown.
  • Karenia brevis red tide off South Padre Island, coast of Texas, October 2009. Photo: Chase Fountain, Texas Department of Wildlife.
  • Bloom of Noctiluca scintillans stretched for more than 20 miles along the southern California coast. Photo: PJS Franks.
  • Ceratium furca Bloom: Pago Pago, American Samoa. Photo: Dr. Don Vargo.