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Photo of <em>Corethron hystrix</em> by Gabriela Hannach, King County Environmental Lab

Photo credit: Gabriela Hannach, King County Environmental Lab

Phytoplankton of the month — June 2018

Corethron hystrix

Corethron hystrix are centric diatoms, approximately 20-150μm long and 20-40μm wide. These cells have a girdle composed of many bands and spines on both valves. A series of short, hooked spines can be observed on one valve. They have flat, elongated chloroplasts near the center. Corethron are cosmopolitan.

For more information see: A Taxonomic Guide to Some Common Marine Phytoplankton, by Rita Horner (Biopress Ltd. 2002)

SoundToxins, a diverse partnership of Washington state shellfish and finfish growers, environmental learning centers, Native tribes, and Puget Sound volunteers, is a monitoring program designed to provide early warning of harmful algal bloom events in order to minimize both human health risks and economic losses to Puget Sound fisheries.

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