Protecting and Restoring the Morro Bay Estuary.
a. sanguinea

Updates from the Field, August 2021: Red tides, Wildlife, and Volunteering

    Why does the water look red? Have you noticed dark, murky water in or around Morro Bay recently? According to Dr. Ryan K. Walter from Cal Poly, samples retrieved from the Cal Poly pier as well as those collected near the mouth of Morro Bay at Morro Rock have shown abnormally high concentrations of a single-celled phytoplankton dinoflagellate called Akashiwo sanguinea during the month of August. Blooms of phytoplankton like the ones observed from Cal Poly can accumulate to form what is known as a red tide, resulting in murky, often red-appearing water. Red tides are blooms of …

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