Image : Blooms

This massive “red tide” of the dinoflagellate Noctiluca stretched for more than 20 miles along the southern California coast. Non-toxic blooms such as these can cause extensive mortalities of plants and animals in shallow waters when the bloom biomass decays, stripping oxygen from the water. (P. Franks)

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Last updated: May 16, 2013

The Harmful Algae Page is supported by a National Oceanic and Atmospheric Administration Center for Sponsored Coastal Ocean Research Coastal Ocean Program (NOAA/CSCOR/COP) grant to the National Office for Harmful Algal Blooms at Woods Hole Oceanographic Institution, Dr. Don Anderson, Director.