San Francisco Chronicle: Why Sick Sea Lions are Washing Up on the California Coast
- Leptospirosis
Published in the San Francisco Chronicle: September 9, 2023
Experts are warning Bay Area residents to not to approach sea lions as a potentially deadly bacterial infection wracks the local population.
Sea lions that seem tired or that tuck their flippers into their sides might be suffering from leptospirosis — a bacterial infection that can cause irreversible kidney damage in California sea lions, as well as humans and dogs, according to the Marine Mammal Center and the Centers for Disease Control.
The Marine Mammal Center typically sees an outbreak of the disease every four to five years, though this is not one of those years, according to Giancarlo Rulli, public relations manager for the center.
Yes, I want to save a life!
You’ll be giving sick and injured animals the best possible care at the Center’s state-of-the-art hospital. With your gift today, you are giving a patient a second chance at life in the wild.
See Our Latest News
{"image":"\/People\/Action\/Volunteers\/cslpangorescuephoto-c-niko-panagopoulos-35.jpg","alt":"California sea lion rescue","title":"The Marine Mammal Center Responds to Largest Domoic Acid Outbreak in Its History","link_url":"https:\/\/www.marinemammalcenter.org\/news\/the-marine-mammal-center-responds-to-largest-domoic-acid-outbreak-in-its-history","label":"News Update","date":"2026-10-28 02:00:00"}
The Marine Mammal Center Responds to Largest Domoic Acid Outbreak in Its History
October 28, 2026
Read More{"image":"\/Animals\/Wild\/Humpback whale\/humpback-whale-spout-by-bill-hunnewell-c-the-marine-mammal-center.jpg","alt":"Humpback whale spout","title":"A Collaboration to Protect Whales and Support California\u2019s Dungeness Crab Fishery","link_url":"https:\/\/www.marinemammalcenter.org\/news\/collaboration-to-protect-whales-and-support-californias-dungeness-crab-fishery","label":"Press Release","date":"2026-10-22 02:00:00"}
A Collaboration to Protect Whales and Support California’s Dungeness Crab Fishery
October 22, 2026
Read More{"image":"\/People\/Action\/Response\/cropped-images\/c-common-dolphin93026cuesta-inlet-in-morro-bayphoto-c-the-marine-mammal-center-noaa-mmhsrp-24359-0-399-1270-992-1790883642.jpg","alt":"Stranded dolphin response","title":"Three Common Dolphins Freed from Mudflats in Morro Bay","link_url":"https:\/\/www.marinemammalcenter.org\/news\/three-common-dolphins-freed-from-mudflats-in-morro-bay","label":"News Update","date":"2026-10-02 02:00:00"}
{"image":"\/Animals\/Wild\/Humpback whale\/cropped-images\/a-humpback-whalesf-bay91526photo-by-norely-faz-c-the-marine-mammal-center-noaa-permit-26532-772-1-1270-992-1789760973.png","alt":"Humpback whale Rio","title":"Humpback Whale \"Rio\" Spotted in the Sacramento-San Joaquin Delta","link_url":"https:\/\/www.marinemammalcenter.org\/news\/humpback-whale-rio-spotted-in-the-sacramento-san-joaquin-delta","label":"News Update","date":"2026-09-18 12:10:00"}
Humpback Whale "Rio" Spotted in the Sacramento-San Joaquin Delta
September 18, 2026
Read More