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Maine Rockweed Coalition

Promoting conservation of intertidal marine habitat.

Mission: The 501c3 Maine Rockweed Coalition promotes conservation of intertidal marine habitat, including rockweed.

MRC position on rockweed harvesting (2025)

Please donate!

We are a platinum seal 501c3, the highest level awarded by CANDID for transparency. We are grateful for donations. Donations fund our research, educational outreach, and advocacy.

NEW! 2025 Rockweed events map.  Art shows, info tables, lectures, field trips!

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.