NASA helps warn of harmful algal blooms in lakes, reservoirs

Harmful algal blooms can cause big problems in coastal areas and lakes across the United States. When toxin-containing aquatic organisms multiply and form a bloom, it can sicken people and pets, contaminate drinking water, ...

Harmful algal bloom

A harmful algal bloom (HAB) is an algal bloom — a dense aggregation of phytoplankton, algae or cyanobacteria in a marine or aquatic environment — 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.

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