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Open source data portal for real-time sharing and visualization of bloom observations, sensor data, and model products

Shellfish Monitoring

Information about HAB monitoring programs in New England, including links to shellfish harvest closures.

Sensors and Autonomous Monitoring

HAB surveillance in New England waters utilizes a network of mobile advanced autonomous sensors and platforms.

HAB Species in New England

New England waters are impacted by multiple HAB species, including those that are well-established and others that are new in the region.


HABON-NE (HAB Observing Network - New England) is a network of advanced HAB sensors and deployment platforms providing continuous, real-time HAB surveillance in New England waters.

Resources for Educators

Harmful algal blooms can be used to illustrate important concepts in biology, ecology, marine science, data analysis, and more. Explore ways to incorporate HABs into educational curriculum.

HAB Species

Information about HAB species and syndromes


Learn about the history of HABs in New England waters

Bloom Forecasting

Annual forecasts simulating germination, growth, and transport of Alexandrium catenella cells


HABON-NE utilizes a fleet of advanced sensors and deployment platforms for continuous and adaptive HAB monitoring


Data portal for real-time sharing and visualization of sensor data, observations, and model products

About Northeast HAB

The management of harmful algal blooms (HABs) in New England has grown more challenging due to the emergence of New HAB species that can cause seafood poisoning and disrupt ecosystems.  The Northeast HAB website was created as a regional resource that provides background information as well as access to bloom monitoring data and commentary, forecasting model products, and data collected by HAB sensors deployed throughout the region. 

Learn about new HABhub features and capabilities!

Visit the HABhub blog to learn about latest updates to the HABhub, and how these tools and features promote data access and analysis!

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State information and resources

Click HERE for information about State HAB monitoring programs in New England, including monitoring and closure notices.

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Alexandrium catenella nowcast/forecast for the Gulf of Maine

Annual Alexandrium catenella blooms in the Gulf of Maine produce potent neurotoxins that accumulate in shellfish and cause Paralytic Shellfish Poisoning (PSP) in human consumers. NOAA NCCOS has developed Gulf of Maine Alexandrium catenella predictive models to better predict and monitor blooms of this species and and shellfish toxicity with the goal to minimize impacts to public health and coastal economies. See the latest forecast HERE.

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12th U.S. Symposium on Harmful Algae

Save the Date! The 12th U.S. Symposium on Harmful Algae will be held on October 27-November 1, 2024 at Holiday Inn Portland by the Bay in Portland, Maine. Additional information will be posted when available.

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Gulf of Maine HAB Science Symposium in 2024

The next Gulf of Maine HAB Science Symposium will be held in Portsmouth, NH on March 12-13, 2024.  This meeting brings together researchers, managers, and stakeholders to share research findings, information and data, and monitoring plans about HABs in New England waters. Additional information about this meeting is available HERE.

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HABs in New England

Please visit our HAB species pages for more information about the different types of HABs impacting New England.

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