The Marine Mammal Center

The Marine Mammal Center The Marine Mammal Center is a nonprofit veterinary research hospital and educational center. We are dedicated to the rescue of ill and injured marine mammals.
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Since 1975, the Center has been headquartered in the Marin Headlands, Sausalito, Calif., within the Golden Gate National Park and has rescued and treated more than 20,000 marine mammals along 600 miles of the California coastline. In 2014, the Center opened Ke Kai Ola, a hospital for the rehabilitation of the critically endangered Hawaiian monk seal, in Kailua-Kona, Hawaii. Due to the volume of an

imals we rescue, we are the largest marine mammal hospital in the world. The Marine Mammal Center is a 501(c)3 nonprofit organization which relies on 80% of its funding from individuals like you.

Just a bunch of sea lions doing sea lion things in the wild ๐ŸคฉWant to know more about sea lion behaviors? ๐Ÿ”— in the commen...
06/14/2026

Just a bunch of sea lions doing sea lion things in the wild ๐Ÿคฉ

Want to know more about sea lion behaviors? ๐Ÿ”— in the comments below to check out our visual guide.

๐Ÿ“ท Bill Hunnewell, Dan Friedman

Northern elephant seal pup Carnation gets a ride in the sealbarrow ๐Ÿฅน๐Ÿ“ท Bill Hunnewell
06/13/2026

Northern elephant seal pup Carnation gets a ride in the sealbarrow ๐Ÿฅน

๐Ÿ“ท Bill Hunnewell

Join our expert, Laura Gill, at the San Mateo County History Museum June 20 for a barking ๐Ÿ—ฃ๏ธ good time exploring the sto...
06/12/2026

Join our expert, Laura Gill, at the San Mateo County History Museum June 20 for a barking ๐Ÿ—ฃ๏ธ good time exploring the stories of our most common patients: sea lions, elephant seals, and harbor seals ๐Ÿฆญ

๐Ÿ“ 2200 Broadway, Redwood City | 1:00 PM
๐Ÿ”— www.historysmc.org

We're excited to welcome Laura Gill of the The Marine Mammal Center to the San Mateo County History Museum on June 20 for Behind the Bark: Stories from the Marine Mammal Center A Talk by Laura Gill, which explores the stories of the Center's most common patients: sea lions, elephant seals, and harbor seals. ๐Ÿฆญ

This program offers a compelling look at the intersection of coastal conservation and community, and is free with museum admission ($6 adults / $4 students & seniors).

It is proudly sponsored by Cypress Lawn Heritage Foundation.

๐Ÿ“ 2200 Broadway, Redwood City | 1:00 PM
๐Ÿ”— www.historysmc.org

Like I said, DON'T. RUSH. ME! ๐Ÿ—ฃ๏ธ How would YOU caption this? Let us know in the comments โคต๏ธ Remember: Be creative. Be fu...
06/12/2026

Like I said, DON'T. RUSH. ME! ๐Ÿ—ฃ๏ธ

How would YOU caption this? Let us know in the comments โคต๏ธ Remember: Be creative. Be funny. It's Caption Friday! ๐Ÿ—ฏ๐ŸŸ๐ŸŽ‰

๐Ÿ“ท Brian Simuro

06/11/2026

๐Ÿฝ๏ธ Feed them!

Our hungry patients need your support to grow strong and healthy ๐Ÿ’ช

Give $5 to help buy three pounds of fish ๐ŸŸ๐ŸŸ๐ŸŸ before June 15 and your donation will be matched by very generous friends of the Center ๐Ÿ’™

๐Ÿ”— in the comments below to feed our patients.

๐Ÿ“น Bill Hunnewell

We recently welcomed Mobile Maker Club to our hospital and education center for a special World Ocean Day maker activity...
06/11/2026

We recently welcomed Mobile Maker Club to our hospital and education center for a special World Ocean Day maker activity ๐ŸŒŠ

Visitors had the opportunity to learn more about our shared ocean and the important role we all play in protecting it. Everyone who participated really let their creativity shine ๐ŸŒŸ๐Ÿฆญ

We're grateful for Mobile Maker Club's support of our work and finding hands-on ways for ocean heroes of all ages to make connections to ocean conservation.

Looking for a free family-friendly day out? We're open to the public Friday through Monday from 10am-4pm. ๐Ÿ”— in the comments below ๐Ÿ‘‡ to reserve your tickets.

As gray whale migration season in the Bay Area winds to a close, our team unfortunately was alerted to another gray whal...
06/10/2026

As gray whale migration season in the Bay Area winds to a close, our team unfortunately was alerted to another gray whale found near Pier 80 in San Francisco - the thirteenth dead gray whale found in the area this year ๐Ÿ˜”

The whale was towed to Angel Island State Park where a team of our scientists and partners from the California Academy of Sciences performed a necropsy, or animal autopsy ๐Ÿ”Ž๐Ÿ‹ Their investigation uncovered evidence of blunt force trauma consistent with vessel strike including a broken vertebra and hemorrhaging behind the skull ๐Ÿ’”

Gray whales have been utilizing the Bay more frequently along their migratory route, with our researchers noting both more whales overall as well as individual whales spending longer periods of time in the Bay ๐ŸŒ While the reasons behind this behavioral shift are unknown, our scientists suspect the warm, shallow waters are desirable feeding and resting grounds for these gentle giants as their traditional arctic feeding grounds become more unpredictable with climate change.

We are dedicated to proactively preventing these tragedies and each investigation, alongside ongoing survey work, helps us better understand the changing behavior of these animals and how to best protect them. Our team is hopeful new thermal cameras, and programs like Whale Smart, can help spot whales and alert operators to their presence to do just that ๐Ÿ™Œ

This is another critical tool, like ongoing safety programs developed with the San Francisco Harbor Safety Committee, our experts hope will make a life-saving difference for our ocean ๐ŸŒŠ Learn about the new tech, possible thanks to our partners at 's Benioff Ocean Science Laboratory, at https://bit.ly/4egVngk.

Researchers at UCSB's Benioff Ocean Science Laboratory expand their whale-saving operations into the busy San Francisco Bay, where gray whales have been taking unexpected detours, possibly for food

06/10/2026

Did you know that most California sea lions are born in the first two weeks of June?

Celebrate sea lion birthdays by giving back! Choose from stylish pinniped tees to puzzles, pins and more to support marine mammals in need ๐Ÿฉต๐ŸŒŠ

Shop today โžก๏ธ link in the comments below ๐Ÿค—

๐Ÿ“ฃ The newest edition to our Adopt-a-Sealยฎ program is here!You can symbolically adopt California sea lion Babymac, who wa...
06/09/2026

๐Ÿ“ฃ The newest edition to our Adopt-a-Sealยฎ program is here!

You can symbolically adopt California sea lion Babymac, who was called in by our friends at Mountain View Police Department earlier this year ๐Ÿ’™

Each symbolic adoption provides food and medicine for sick sea lions just like Babymac ๐Ÿค

๐Ÿ”— in the comments below to get your adoption certificate.

๐Ÿ“ท Bill Hunnewell, Trina Baucom

We're heartbroken to share the sudden passing of Hawaiian monk seal RU72, Makamae ๐Ÿ’”Since her arrival at Ke Kai Ola in No...
06/09/2026

We're heartbroken to share the sudden passing of Hawaiian monk seal RU72, Makamae ๐Ÿ’”

Since her arrival at Ke Kai Ola in November due to her mother, Waimanu, not nursing her, the seal pup has been making slow but steady progress with our animal care experts. She was named Makamae, meaning precious, valuable, darling, or beloved, by Kohala Elementary School students โค๏ธ

Sadly, Makamae took an unexpected turn and despite supportive care from her veterinary team passed June 4. A necropsy, or animal autopsy, revealed mesenteric torsion, a twisting of the intestines that cuts off blood supply to a large portion of the gastrointestinal tract. Veterinary experts suspect this rare condition, which is immediately life-threatening and can be fatal within 24 hours, caused Makamae's sudden death, though the investigation is still pending additional test results.

We're saddened by this tragic outcome, but comforted knowing that even in death, Makamae will provide invaluable insights to conservation efforts to save this species ๐Ÿฆญ๐ŸŒˆ Find ways YOU can help endangered Hawaiian monk seals at https://bit.ly/32ZtWUp.

Address

2000 Bunker Road
Sausalito, CA
94965

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