Cetacean Society International

Working for whales, dolphins and porpoises worldwide


CSI is an all-volunteer, non-profit conservation, education and research organization working on behalf of cetaceans (whales, dolphins and porpoises) and their marine environment.

Our Mission

CSI’s Mission is to stop the killing, capture and display of cetaceans (whales, dolphins, and porpoises); encourage human activities that enhance public awareness and stewardship of cetaceans and our marine environment; and collaborate with stakeholders to reduce anthropogenic threats such as bycatch, invasive research, sonar, ship strikes, pollution, seismic testing, and others as they are revealed.

To meet that mission, CSI:

Membership categories:

You may use PayPal to become a CSI Member. Paypal accepts credit card payments. You do not need a PayPal account.

Please click the "Donate" button to become a member or make a donation to CSI.

If you prefer to join or donate to CSI by mail, please print the following form, fill it out and mail with your check to:

Cetacean Society International
c/o Brent Hall
460 Wallingford Road
Cheshire, CT 06410 USA

Print Membership Form

Please note that CSI honors your privacy and security. We will never share your name or personal information.

Please Remember

Your membership dues constitute tax deductible contributions as provided by law. If your employer has a matching grant program, please include the application form; this will double your donation to Cetacean Society International.  (Members outside U.S.A.: please send the equivalent of the values shown above in your local currency.)