Harmful algal blooms occur when colonies of algae — simple plants that live in the sea and freshwater — grow out of control and produce toxic or harmful effects on people, fish, shellfish ...

An exceptionally dense bloom of Alexandrium monilatum was observed in lower Chesapeake Bay along the north shore of the York River between Sarah's Creek and the Perrin River on Aug. 17, 2015.

Freshwater phytoplankton blooms cause losses of more than $4 billion annually in the United States by disrupting the seafood industry, contaminating drinking water supplies, and harming water ...

Satellite images have revealed a massive algal bloom and red floodwaters to the north of WA’s Pilbara coast in the wake of Severe Tropical Cyclone Zelia. Port Hedland and surrounding areas of WA ...

Algae can be beautifully bioluminescent in dark ... The National Oceanographic and Atmospheric Administration (NOAA) looks for signs of blooms and collects data on water quality to try to predict ...