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Now, before you leave, do you want to make a seal's day?

Become a Sustaining Member Today

If you care deeply about protecting our ocean and the marine mammals that call it home, you’ve come to the right place. You can help sick, injured and orphaned marine mammals like Leimana all year long with your monthly contribution.


Endangered Hawaiian monk seals like Leimana depend on help from compassionate people like you / Photo by Elena Graham / NOAA permit #18786

Want a simple way you can help patients like Leimana? Become a Sustaining Member today!

You see, as a Sustaining Member, your automatic monthly gift will be helping vulnerable marine mammals like Leimana every day of the year!

Leimana was starving when she arrived at our hospital. But thanks to support from Sustaining Members, she got all the food and care she needed—and a second chance at life.

As you can imagine, many patients require life-saving surgeries to remove swallowed fishing hooks and other ocean trash, medicine to cure infections and advanced tests to diagnose illnesses. You’ll make all of that, and more, possible with your monthly gift.

You’ll find that saving animals like Leimana is particularly meaningful. Why? She is a member of an endangered species, the Hawaiian monk seal—only about 1,400 of these seals are alive today.

But caring people like you are taking urgent action! You see, about 30 percent of these Hawaiian monk seals are alive today directly due to conservation efforts led by NOAA and partners like the Center and you. Helping individual patients like Leimana not only gives her a second chance at life, but you also increase the odds that this endangered population will grow as Leimana might give birth to several monk seals in her lifetime.

Join ocean-lovers like you supporting this life-changing work. One patient at a time, with your automatic monthly gift you’ll be saving marine mammals all year long.

It's simple to set up right now using your credit card*

  • You maintain complete control over your giving and can adjust or cancel it at any time via a secure login.
  • Each February, you'll receive a year-end statement of your previous year's giving to help make tax time a little easier.
  • Your membership is automatically renewed.

* If you prefer to have your gift automatically deducted from your bank's checking account each month, please print and complete this form.

Mail it to:

The Marine Mammal Center
2000 Bunker Road
Sausalito, CA 94965

Questions? Contact Sheila by phone at (415) 289-7335 or by email at members@tmmc.org.

To access your secure account, just click on the Login button found on the homepage of our website, enter your username and password (they can be re-sent if you've forgotten them) click on Update Profile, then click on Your Sustaining Gifts.

Already a Sustaining Member? Check below to see your benefits.


Sustaining Members enjoy special benefits. See how your monthly gift can give back to you too.

  Sustaining Membership Kellan Circle Protected Resources Circle
  $5 - 41 /mo. $42 - 83 /mo. $84+ /mo.
Your Rescue Newsletter – delivered straight to your door
Email updates
10% discount on Gift Store purchases, in Sausalito and online
Discounted Guided Tours
Invitation to exclusive virtual presentation and Q&A with Center experts
Personal tour – to schedule call (415) 289- 7335  
Special recognition in Center publications  
Invitation to a summer Private Patient Release Celebration  
Feeling of joy knowing you are helping marine mammals and our ocean!

All in-person events are subject to change as they are dependent on public health guidelines from local, state and federal officials.

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