Maine Rockweed Coalition

Promoting conservation of intertidal marine habitat.

NEW! Click the map to explore this statewide interactive online map –  you can find any area of the coast and then explore tax parcels, conservation lands, rockweed beds, and (Cobscook Bay only) rockweed harvest sectors.

Cobscook Bay Rockweed Management Area map with conserved lands, tax parcels, rockweed ledges and rockweed harvest sectors.

Dr. Ken Ross (1937 – March 6, 2024). Founding board member. Plaintiff in the landmark Ross v Acadian Seaplants case, which resulted in landowners having the legal right to deny rockweed harvesters access to the rockweed on their intertidal property. We remember Ken with gratitude and affection.

NEWS! Maine Public: A team of senior scientists has published a critique of  the 2023 study claiming Maine rockweed quickly recovers from commercial harvest, in one year.

Mission: The 501c3 Maine Rockweed Coalition promotes conservation of intertidal marine habitat, including rockweed.
  • We are biologists, teachers, Maine residents, small business owners, fishermen, and others. We became a 501c3 non-profit in 2021.
  • We believe in the value of protecting coastal habitat for fisheries and wildlife, particularly in light of the impacts of climate change on marine species; and for climate mitigation. 

2024: a summer GIS intern from the University of Maine will join us soon.

Internship offered in partnership with the Maine Geospatial Institute.

Download the 2024 rockweed project flyer.

NEW 2024 publication! (OPEN ACCESS)

New paper in press (Journal of Experimental Marine Biology and Ecology) by MRC senior scientist and three others: reanalysis and critique of the 2023 paper that concluded rockweed grows back rapidly, a year after harvest.