Harmful Algal Blooms
Harmful algae in the Pacific Northwest
Field data on toxic harmful algal blooms
Bulletins for HAB event response
An algal bloom is a rapid increase in the population of algae in freshwater or marine water systems. A harmful algal bloom (HAB) is an algal bloom that causes negative impacts to other organisms via production of natural toxins, mechanical damage to other organisms, or by other means. HABs are often associated with large-scale marine mortality events and have been associated with various types of shellfish poisonings.
Pacific Northwest HAB Bulletin Success Story
For the first time ever, state fisheries managers increased the daily harvest limit from 15 to 20 razor clams per person. As a result, recreational razor clam harvesters on Long Beach, Washington set a record in April 2017, generating $7 million and 77,800 digger trips over the eleven-day opening. The Pacific Northwest HAB Bulletin was accurate and after this record-breaking safe harvest, the fishery was closed for the season due to a HAB that subsequently reached the beaches.