Marine Algae (Pseudo-nitzschia) which produces demoic acidOver 300 species of phytoplankton have been implicated in causing “red tides”. While most “red tides” are harmless, over 80 phytoplankton species may produce toxins that are harmful to humans and marine life. Harmful Algal Blooms (HABs) have been responsible for closures of shellfish and crab fisheries off the Oregon coast in recent years, resulting in negative social and economic impacts for coastal communities and across the state. In response, the state of Oregon and the National Oceanic and Atmospheric Association have been engaged in efforts to research and monitor the potential causes and extent of HABs to better understand the risks. 


Follow the links below to learn more about HABs and their impacts

NOAA Harmful Algal Blooms Website

Oregon Department of Fish and Wildlife - Harmful Algal Blooms Website

Oregon Health Authority - Harmful Algal Blooms Website