What are Harmful Algal Blooms (HABs)?
Marine and fresh waters teem with life, much of it microscopic and most of it beneficial and harmless. There are, however, some species of algae and cyanobacteria that cause harm, either through the production of potent toxins or through the accumulated biomass during their “blooms”. Impacts include human and wildlife illness and mortality, ecosystem disruption, and economic losses to coastal communities.
Learn about different toxic or harmful algal species, and the poisoning syndromes they cause
Discover how harmful algal blooms impact human health and coastal economies, wildlife, ecosystems, and more
Learn about the national and international research programs focused on understanding, managing, and preventing harmful algal blooms
Major programmatic and informational resources regarding harmful algal blooms, as well as fact sheets and hotlines
News and Announcements
Alexandrium catenella forecast FY2023 released!
NOAA NCCOS is pleased to announce the release of our FY2023 season Alexandrium catenella nowcast/forecast for the Gulf of Maine. https://coastalscience.noaa.gov/science-areas/habs/hab-forecasts/gulf-of-maine-alexandrium-catenella-predictive-models/experimental-nowcast-forecast-simulation/ ** Note: if you are using google chrome, make sure that you clear the browser cache each week to view the latest model results. All other browsers should pick up the update automatically.Read More
Taxonomic Identification of Harmful Algae in U.S. Marine Waters Course
Effective monitoring and management of harmful algal blooms (HABs) relies on accurate and timely identification of the species involved. The classic method of detection is microscopic examination for HA species based on morphological characteristics. The rapidly expanding harmful algae taxonomy field, retirement of many ‘classical’ taxonomists, lack of dedicated U. S. harmful algae taxonomic and…Read More
ICHA 2023 in Hiroshima, Japan
The 20th International Conference on Harmful Algae (ICHA) will be held November 5-10, 2023, in Hiroshima, Japan. Abstracts are due June 19. Please visit the conference website HERE.Read More
Upcoming Conferences and Events
Interested in attending upcoming conferences, meetings, workshops, or other events related to HAB science? A timeline of events of interest to the HAB community is available on the US HAB website, and updated periodically. Please click HERE to view the timeline & current listings, which are updated periodically. If you wish to post a meeting or event, please contact Harmful-Algae@whoi.edu.Read More
Educational and job opportunities in HAB Science!
Proceedings of the the Workshop on the Socio-economic Effects of Harmful Algal Blooms in the United States
The proceedings document describing the Workshop on the Socio-economic Effects of Harmful Algal Blooms in the United States is now available here. The report documents the proceedings of a 2020 workshop convened by NOAA NCCOS and the U.S. National Office for HABs, and presents recommendations to advance an assessment framework and a national research agenda that will lead to comprehensive evaluations of the social and economic effects of HABs in the fresh (primarily the Great Lakes) and marine waters of the United States.Read More
HARMFUL ALGAE NEWS No. 72 now available
11th U.S. Symposium on Harmful Algae
Thank you for attending the 11th U.S. Symposium on Harmful Algae! The final program and agenda is available HERE. Additional program information will be posted when available.Read More
19th ICHA – Abstract book available!
Thanks to the organizers of this virtual event! The abstracts are available HERE. Conference proceedings will be posted when available.Read More
HABs and Ocean Acidification Report Published
The workshop report associated with NOAA NCCOS’s August 2020 workshop on interactions between HABs and ocean acidification is now available. To read the report, please click here.Read More