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The first marine mammal stranding related to this harmful algal bloom (HAB) was reported on February 21, 2025, and the currently the numbers are over 300. California Ocean Observing System Network HAB monitoring and Alert Program have pulled together their expertise and data to create this event-driven bulletin.  Learn more in our flyer, most importantly […]

With funding from the National Science Foundation, Farallon Institute has created a page dedicated to seabirds as a ‘sentinel species’. Allowing scientists to observe seabirds to further our understanding of the health of the oceans.   

Above: Southern California MOCI, updated through September 2024. Large positive (red) values indicate warmer ocean conditions and weaker upwelling, which benefits Sardine recruitment. Negative (blue) values represent cooler ocean temperatures and strong upwelling, supporting a wide range of species, including kelp, copepods, krill, fish, and seabirds. The West Coast ocean conditions are highly variable, influenced […]

The September 2024 California Harmful Algal Bloom Bulletin is now available! This latest edition includes a comprehensive summary of model outputs, real-time observations, and public health advisories to keep you informed about harmful algal bloom activity along the California coast. For a detailed summary and data figures and analysis, click the link below: September 2024 […]

Learn more about Dr. Ally Pasulka‘s, Associate Professor at CalPoly in San Luis Obispo California,  journey into ocean science as well as her contributions to our ocean observing system. “One of the things that excites me about involving undergraduate students in our Harmful Algal Bloom research is showing them how science directly impacts our communities.” […]

November 8th, 2024: This week under Scripps Pier, in La Jolla San Diego, ocean observers have been able to witness the beautiful blue bioluminescence of a plankton called Lingulodinium polyedra. From under the microscropic imaging instrumentation deployed at the end of this pier, we get another exciting look at this species! Our advanced instrumentation, called […]

https://sccoos.org/wp-content/uploads/2024/11/cellular_domoic_2024-10-01_2024-10-31_daily_7.mp4 The California Department of Public Health (CDPH) has issued two sets of advisories against consuming Dungeness Crab in parts of Northern California due to risk of Amnesic Shellfish Poisoning from domoic acid (DA). CDPH conducts regular sampling and biomonitoring of shellfish for this toxin, and found high levels in significant portions of crabs caught […]