Our Mission


Who We Are

Founded in 1982, we are a private, non-profit organization of island residents and other interested citizens.


We work to conserve wild or undeveloped open space, scenic areas, and historic landmarks in the Casco Bay region.


We strive to balance human use and enjoyment with protecting the natural environment of Casco Bay for future generations.


Lobster Traps. Photo by Thomas Dewey on Unsplash.

Invasive Marine Species

 The presence of invasive species often indicates changing ecosystems. See our new Invasive Marine Species page with informative links on these species in the Casco Bay region.

Nautical Chart of Casco Bay

Oceanside Conservation Trust is a nationally-accredited land trust with stewardship of seventeen properties on the Casco Bay Islands.

Support our work by making a donation, becoming a member, or signing up for our mailing list today.

Donate & Become a Member

Your donation helps us to fulfill our mission. Oceanside Conservation Trust of Casco Bay is a 501(C)(3) charitable organization. Donations are tax deductible.

Join Our Mailing List

Sign up for our mailing list and stay up to date about Oceanside Conservation Trust of Casco Bay news and events. We send mailings and email newsletters several times per year. We never share or sell our mailing list.