Why care? Population growth has had some unintended environmental consequences―among them, nitrogen pollution. When contaminated runoff enters the bay, patches of slimy green muck cover previously healthy beaches. Nitrogen pollution has already ravaged other bays worldwide, but Casco Bay is just beginning to see the effects. “We don’t want to get to the point where we can’t turn it around,” says Portland native Joe Payne, the Casco Baykeeper with eco-group Friends of Casco Bay. Joe and his organization are working to make Maine the first East Coast state to implement a statewide nitrogen limit.
Plan your trip: Best time to go: July or August. Catch a ferry from Portland to Peaks Island to join a trip with the Maine Island Kayak Company (maineislandkayak.com). Stay at the Chebeague Island Inn (chebeagueislandinn.com); rooms start at $245.
How to help: Friends of Casco Bay (friendsofcascobay.org) relies on certified volunteers to collect data for its EPA-approved water quality monitoring program. The group is also a resource for ecological landscaping, a technique that aims to keep fertilizers and pesticides out of the bay.