Working with you
to keep Casco Bay blue.

Join us


Our 30th Anniversary Celebration and Members Annual Meeting is no longer an in-person event. Stay tuned, because we will still celebrate together — online! We will let you know the details soon.

To be sure you receive an announcement about our 30th Anniversary Celebration, sign up to receive our email updates here.


Get to know us. Read our stories.

Warm winter = early algal blooms

April 1, 2020

On March 3rd, Casco Baykeeper Ivy Frignoca strolled the South Portland shoreline near our office. She was shocked to see green algae growing at the… Read more

Flushable wipes are not flushable

March 27, 2020

With toilet paper currently in short supply, there is a looming problem that threatens cities, towns, and water districts. So-called flushable wipes are clogging sewer… Read more

We’re still monitoring the health of Casco Bay, and you can too

March 25, 2020

It is lonely out on the pier where Staff Scientist Mike Doan is collecting data on the health of Casco Bay — and he is playing… Read more

Mary Cerullo, Associate Director

Mary Cerullo Begins a New Chapter

March 24, 2020

As many Friends of the Bay know, over the past 22 years, Associate Director Mary Cerullo has been our writer-in-residence, our media maven, the developer… Read more

Friends of Casco Bay’s mission is to improve and protect the environmental health of Casco Bay.  

Our areas of work are:


Friends of Casco Bay’s Successes

The impact of Friends of Casco Bay over three decades

Friends of Casco Bay has a long history of success. Since our founding in 1989, our work-with, science-based approach has moved the needle toward a… Read more


View our most recent videos:



How you can help:


Photograph by Kevin Morris


Photograph by Dave Dostie

Stay informed by signing up for our emails


We’re proud members of


Cover photo: Photograph by Kevin Morris