California health officials have given the all-clear for consumption of Dungeness crab caught in waters off the Bay Area.

Thursday’s announcement from the state Department of Public Health said levels of a dangerous marine toxin have declined to “low or undetectable levels” in crabs caught from Monterey up to Marin.

The Department of Fish and Wildlife said the finding will allow the immediate opening of the recreational Dungeness crab fishery along the coast south of 38 degrees north latitude — roughly the southern edge of Point Reyes.

The agency said the commercial fishing fleet, which has been sidelined for months because of high levels of domoic acid in crabs offshore, could be allowed to harvest Dungeness as early as next week. Dungeness crabs will remain off-limits in California waters north of the 38th parallel.

The Department of Public Health and its Office of Environmental Health Hazard Assessment are still recommending that consumers exercise an extra level of caution when eating fresh-caught California Dungeness:

Despite several weeks of samples below alert levels, as a precaution, CDPH and OEHHA recommend that anglers and consumers not eat the viscera (internal organs, also known as “butter” or “guts”) of crabs. CDPH and OEHHA are also recommending that water or broth used to cook whole crabs be discarded and not used to prepare dishes such as sauces, broths, soups or stews. The viscera usually contain much higher levels of domoic acid than crab body meat. When whole crabs are cooked in liquid, domoic acid may leach from the viscera into the cooking liquid. This precaution is being recommended to avoid harm in the unlikely event that some crabs taken from an open fishery have elevated levels of domoic acid.

Domoic acid is a potentially fatal toxin produced by a microscopic species of algae that may have flourished in the eastern Pacific in 2015 because of unusually warm water temperatures. The substance is believed to have caused widespread poisoning of seals and other marine mammals last year.

High levels of the toxin were found in both Dungeness and rock crabs all along the West Coast from Southern California to Washington, leading to delays in opening the fishery. The Dungeness harvest was allowed to begin in the Pacific Northwest in late December. Rock crabs are still off-limits along the California coast south of San Simeon.

The fishery closure not only made it harder and more expensive for diners to enjoy a seasonal delicacy, but brought a new round of hard times to the region’s fishing fleet. State officials said in November the ban on harvesting Dungeness crab could result in a $60 million economic loss.

Author

Dan Brekke

Dan Brekke is a blogger, reporter and editor for KQED News, responsible for online breaking news coverage of topics ranging from California water issues to the Bay Area's transportation challenges. In a newsroom career that began in Chicago in 1972, Dan has worked as a city and foreign/national editor for The San Francisco Examiner, editor at Wired News, deputy editor at Wired magazine, managing editor at TechTV as well as for several Web startups.

Since joining KQED in 2007, Dan has reported, edited and produced both radio and online features and breaking news pieces. He has shared in two Society of Professional Journalists Norcal Excellence in Journalism awards — for his 2012 reporting on a KQED Science series on water and power in California, and in 2014, for KQED's comprehensive reporting on the south Napa earthquake.

In addition to his 44 years of on-the-job education, Dan is a lifelong student of history and is still pursuing an undergraduate degree.

Email Dan at: dbrekke@kqed.org

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