
The Marine Mammal Center advances global ocean conservation through rescue and rehabilitation, scientific research, and education.
Visit Us at PIER 39 in San Francisco
Engage with our dockside docents and learn about California sea lions. Thursday to Monday, 11:30am to 5pm.
Our Sausalito Hospital & Visitor Center is Open to the Public
Visit the world’s largest marine mammal hospital to see animal care experts providing life-saving care to patients so they can be released back to the wild. Tickets are free but must be booked online in advance. Reserve your spot today!
Ways to Give
Your support makes life-saving work possible. Our patients rely on the generosity of people like you. There are many different ways to make a gift today and help return marine mammals to a healthier ocean home.




What's New
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The Marine Mammal Center In The News
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SFGATE: The Secret Sex Lives of Harbor Porpoises Under San Francisco's Golden Gate Bridge
December 7, 2023
Read More{"image":"\/Animals\/Patients\/California sea lions\/2018\/cropped-images\/csl-yakshack-by-bill-hunnewell-c-the-marine-mammal-center-371-6-2212-1728-1701471071.jpg","alt":"California sea lion Yakshack","title":"The Press Democrat: Flurry of Sick and Dying Sea Lions Believed to be Caused by Bacterial Disease","link_url":"https:\/\/www.marinemammalcenter.org\/news\/the-press-democrat-flurry-of-sick-and-dying-sea-lions-believed-to-be-caused-by-bacterial-disease","label":"In the News","date":"2023-09-05 02:00:00","type":"news"}

The Press Democrat: Flurry of Sick and Dying Sea Lions Believed to be Caused by Bacterial Disease
September 5, 2023
Read More{"image":"\/Animals\/Patients\/Releases\/cropped-images\/csl-quly-left-and-togozees-release-by-bill-hunnewell-c-the-marine-mammal-center-90-0-3996-3122-1693421090.jpg","alt":"two California sea lions are released in front of a crowd of people","title":"NPR Morning Edition: Hundreds of Seals and Sea Lions Are Treated Each Year at The Marine Mammal Center","link_url":"https:\/\/www.marinemammalcenter.org\/news\/npr-morning-edition-hundreds-of-seals-and-sea-lions-are-treated-each-year-at-the-marine-mammal-center","label":"In the News","date":"2023-08-18 02:00:00","type":"news"}

NPR Morning Edition: Hundreds of Seals and Sea Lions Are Treated Each Year at The Marine Mammal Center
August 18, 2023
Read More{"image":"\/Places\/PIER 39\/cropped-images\/pier-39-k-dock-visitors-photo-c-the-marine-mammal-center-14-2-3868-3022-1691445366.jpg","alt":"visitors to PIER 39 watch California sea lions on the docks","title":"San Francisco Chronicle: At San Francisco's PIER 39, Tourists Can Now Learn About Sea Lions as well as See Them","link_url":"https:\/\/www.marinemammalcenter.org\/news\/san-francisco-chronicle-at-san-franciscos-pier-39-tourists-can-now-learn-about-sea-lions-as-well-as-see-them","label":"In the News","date":"2023-06-29 02:00:00","type":"news"}

San Francisco Chronicle: At San Francisco's PIER 39, Tourists Can Now Learn About Sea Lions as well as See Them
June 29, 2023
Read More{"image":"\/Animals\/Patients\/Northern fur seals\/2022\/cropped-images\/nfs-juicebox-by-bill-hunnewell-c-the-marine-mammal-center-578-0-2865-2238-1667347585.jpg","alt":"northern fur seal Juicebox","title":"Los Angeles Times: These Are the 'Hot Spots' in California for Seal Harassment","link_url":"https:\/\/www.marinemammalcenter.org\/news\/los-angeles-times-these-are-the-hot-spots-in-california-for-seal-harassment","label":"In the News","date":"2023-06-09 02:00:00","type":"news"}

Los Angeles Times: These Are the 'Hot Spots' in California for Seal Harassment
June 9, 2023
Read More{"image":"\/Animals\/Patients\/Hawaiian monk seals\/2022\/cropped-images\/hms-malama-exploring-pen-by-lauren-van-heukelem-c-the-marine-mammal-center-noaa-permit-18786-03-53-93-1776-1387-1660689854.jpeg","alt":"Hawaiian monk seal Malama exploring her rehabilitation pen","title":"The Washington Post: An Endangered Seal Was Nursed Back to Health. Then Someone Killed Her.","link_url":"https:\/\/www.marinemammalcenter.org\/news\/the-washington-post-an-endangered-seal-was-nursed-back-to-health-then-someone-killed-her","label":"In the News","date":"2023-06-08 02:00:00","type":"news"}

The Washington Post: An Endangered Seal Was Nursed Back to Health. Then Someone Killed Her.
June 8, 2023
Read More