Earth Day Spotlight: Grassroots Action Making a Difference
April 22, 2025
In honor of Earth Day, we are shining a light on some of the important work happening around the Bay.
Improving and protecting the environmental health of Casco Bay
Please update your records with our new address.
75 West Commercial Street, Suite 301
Portland, ME 04101
Portland, ME 04101
Friends of Casco Bay improves and protects the environmental health of Casco Bay. As home to the Casco BAYKEEPER® we act as the eyes, ears, and voice of the Bay.
We use an integrated approach to tackle the largest threats to the health of our coastal waters,
meeting our mission through science, advocacy, and community engagement. We track the health
of the Bay, advocate to reduce pollution and increase climate resiliency, and engage the public in
our efforts to improve and protect Casco Bay.
How You Can Help
Our Blog
Imagining a Healthy Future for Casco Bay: A Student Perspective
April 9, 2025
Watch our conversation with five MECA&D student about their art exploring the health of Casco Bay.
Take Action: Support Smart Solutions for PFAS Sludge
April 7, 2025
Take action by April 10 to support LD 25—a bond to help Maine safely manage PFAS-laden sludge and protect public health and the environment.
Science on the Bay: What We Learned in 2024
March 21, 2025
Dive into some of the latest science from Friends of Casco Bay—eelgrass, ocean acidification, water quality, and the powerful impact of Water Reporters.
Upcoming Events
Paddle with a Purpose & Watershed Celebration
Registered Maine Guide Jen Deraspe will embark on a solo, 85-mile canoe journey from Bethel to Casco Bay to raise awareness and support for Friends of Casco Bay and Friends of the Presumpscot River.
April 26: Discover Water Reporter: Help Be the Eyes of the Bay
Whether you’re a seasoned Water Reporter or curious about the program, join us for an engaging and inspiring event!
Our Work
Science
We “listen” to Casco Bay by collecting water quality data, enabling us to identify threats to the health of the Bay. We track water quality year-round from our three Continuous Monitoring Stations, and collect seasonal water samples around the Bay.
Advocacy
Advocating for clean marine water is at the core of our work. Led by our chief advocate, the Casco Baykeeper, our staff and community lend the Bay our voices. We advocate for the health of our coastal waters in town halls and the state legislature, and work with businesses and environmental agencies to promote clean water policies and practices.
Get Involved
The name Friends of Casco Bay was chosen with purposeful intent. It takes a community to care for the Bay. We host events to educate the public on issues affecting the Bay and coordinate volunteer efforts to improve its health. We are proud to say that our volunteers and supporters are among the Bay’s most dedicated ambassadors.
We’re proud members of
