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Matching Gift Challenge

Your year-end support will be matched up to $100,000! Yes, your impact will go twice as far protecting marine mammals like whales and our shared ocean.

Did you know the marine mammals we care for provide critical insights into our ocean's health? And right now, the ocean is in trouble.

That’s why this match challenge matters so much. It’s your chance to make double the difference when it’s needed most.

Double your impact
Humpback whale
  • Contact Us

Get in Touch

Report a Marine Mammal

In California (from San Luis Obispo to Mendocino), call our hotline: (415) 289-SEAL (7325)
To report a Hawaiian monk seal sighting on Hawai‘i Island: (808) 987-0765
To report a Hawaiian monk seal sighting on Maui: (808) 292-2372
To report a whale or dolphin sighting in San Francisco Bay: share your observations

Questions About Making a Gift?

We're happy to help assist you. You can reach us Monday-Friday 8am-5pm PT at (415) 289-7335 or email us at give@tmmc.org.


Mailing a check? You can send your life-saving donation to:

The Marine Mammal Center
2000 Bunker Road
Fort Cronkhite
Sausalito, CA 94965-2619


The Marine Mammal Center is a 501(c)(3) certified organization and is registered in all applicable states. Our tax identification number is 51-0144434.

Reach Us By Email

Reach Us By Phone or Mail

Sausalito

The Marine Mammal Center
2000 Bunker Road
Fort Cronkhite
Sausalito, CA 94965-2619

(415) 289-7325

Questions about visiting?
(415) 653-1870

Kona

Ke Kai Ola
73-731 Makako Bay Drive
Kailua-Kona, HI 96740

(808) 326-7325

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