Algae are always in natural bodies of water like oceans, lakes, and rivers, and a few types produce toxins. A harmful algal bloom (HAB) occurs when toxin-producing algae grow excessively in a body of water.
Toxins and Harmful Algal Blooms Science Team
National Institute of Environmental Health Sciences: NIEHS Home page
අපට විපත් ගෙනෙන හානිකර ඇල්ගී
National Institute of Environmental Health Sciences: Algal Blooms
Phytoplankton blooms see two-decade surge along world's coastlines
UT Professor Develops Model to Better Manage Toxic Algae
Harmful Algal Blooms
Horizontal Evaluation of the Canadian Shellfish Sanitation Program
National Institute of Environmental Health Sciences: Algal Blooms
What is a harmful algal bloom? National Oceanic and Atmospheric
National Harmful Algal Bloom Observing Network Framework Workshop