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Marine Biotoxin monitoring program

Marine Biotoxin Quarantines and Health Advisories

Updated information on quarantines and shellfish toxins is also available at:

News Releases:

September 1, 2020- CDPH Lifts Warnings about Certain Shellfish from San Francisco and San Mateo Counties

July 1, 2020 – Consumers Warned Not to Eat Sport-Harvested Bivalve Shellfish from Four California Counties (San Francisco, San Mateo, Santa Cruz, and Monterey)

April 30, 2020 - Annual Quarantine of Sport-Harvested Mussels Begins May 1

April 20, 2016 - CDPH Press Release: CDPH Reminds of Warning on Razor Clams from Humboldt and Del Norte Counties 

Quarantines and Health Advisories related to Marine Biotoxins in California are maintained by the Office of Public Affairs.

Additional information on domoic acid in crustaceans (crabs and lobsters) is posted by the CDPH Food and Drug Branch.

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