When it comes to a recent Humboldt Baykeeper study of mercury levels in Humboldt Bay fish and shellfish, the group’s director Jennifer Kalt said there’s good news and bad news.


The study found that men, women and children of all ages should avoid ingesting unsafe levels of mercury by taking leopard shark out of their diets. The study also recommends women under 45 years old and children avoid eating lingcod above 10 pounds.


Weekly serving amounts for other species — such as bat rays, California halibut, black rockfish — are also recommended to be low, according to the study.


Photo: From left to right, Captain Phil Glenn of Bluefin Charters, volunteer angler Doug Epperley, and fisheries consultant Ross Taylor participate in the study on mercury levels in Humboldt Bay fish in 2016.

Have you wondered whether it is safe to eat fish from Humboldt Bay? We’ve been testing mercury levels in local fish with fisheries consultant, Ross Taylor. We’ve found that most local fish are safe to eat in moderation – with a few exceptions. 

Click HERE to listen to the radio interview.

We want to hear from you! If you eat leopard shark, ling cod, California halibut, clams, or Dungeness crab, we hope you will help provide information for our mercury study. 

In 2012, statewide sampling found the highest mercury levels in a leopard shark from Humboldt Bay. In July 2016, Humboldt Baykeeper received a grant from the California Environmental Protection Agency to analyze fish caught by local fishermen to determine the magnitude of mercury exposure from eating locally caught fish. Target species include lingcod, California halibut, bat ray, leopard shark, surfperch, oysters, and several species of clams. This study is ongoing and final results are expected in 2018.

Please print, complete, and mail or email this questionnaire about how often you fish, which species you eat, and how you cook them:

Download the Angler Survey

Encuesta sobre el consumo de pescado en Humboldt Bay 

Humboldt Baykeeper is about to begin a California EPA-funded study of mercury in certain Humboldt fishes. Fred Evenson of the Ecological Rights Foundation and Econews host / director of Humboldt Baykeeper Jen Kalt discussed mercury in fish in Monterey Bay's Elkhorn Slough, where a fish advisory was recently issued to protect human health.