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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. 

Gulf of Maine HAB Science Symposium in 2022

January 20, 2021

The next Gulf of Maine HAB Science Symposium will be held virtually in early 2022.  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 will be posted as it becomes available.

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2020 Gulf of Maine Alexandrium cyst sampling

January 20, 2021

Researchers with NOAA’s National Centers for Coastal Ocean Science and the Woods Hole Oceanographic Institution completed the annual Gulf of Maine cyst sampling cruise in Oct 2020. During this cruise, sediment samples were collected to measure concentrations of Alexandrium catenella cysts throughout the region. These data helped to inform the 2021 red tide forecast issued…

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HAB Species

December 16, 2019
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