Seaweed Saturday

Explore seaweed food, films, art, science and vendors at this free, all-day expo on April 20, 2024.


Celebrate seaweed with friends, family, and farmers! This day-long event will offer public seaweed demos, films, art, interactive tables, and a marketplace. Free, for all ages.

Join us Saturday, April 20th, 2024 from 11am to 4pm for Seaweed Saturday at the Gulf of Maine Research Institute in Portland. Activities at Seaweed Saturday will highlight seaweed in art, food, and science, featuring dozens of local seaweed farms, businesses, and organizations.

Maine Sea Grant will offer hands-on seaweed identification workshops and demos. Local artists will exhibit their seaweed-inspired works. In the marketplace, seaweed farms and businesses will showcase their seaweed products to taste or take home.

The Maine Outdoor Film Festival will also host film screenings throughout the day featuring seaweed stories and the outdoors. Because theater seating is limited, we ask that you pre-register for the film screenings on the official GMRI event page.

Event Info

  • Date & Time: April 20, 2024, 11 am to 4 pm
  • Location: Gulf of Maine Research Institute, 350 Commercial St, Portland, ME (Map)
  • Admission: Free. No ticket required. All ages.
  • Official event page:


Come visit these amazing seaweed companies, artists, and exhibitors at Seaweed Saturday!

Thanks to our Seaweed Saturday sponsors

Seaweed Saturday Sponsors

World Wildlife Fund: As a global conservation organization, the WWF works in nearly 100 countries – collaborating with people around the world to develop and deliver innovative solutions that protect communities, wildlife, and the places in which they live. WWF is working to grow the seaweed industry to bring the benefits of seaweed farming for nature, people, and climate to scale - driving new markets and investing for impact around the world.


Maine Outdoor Film Festival (MOFF) curates and produces film experiences related to the beauty, interactivity, and complexity of our planet. MOFF believes top-notch storytelling and imagery has the potential to broaden perspectives, strengthen relationships, and to foster change within ourselves and our communities.


Maine Sea Grant is a university-based program under NOAA that supports research, extension, and education on issues of importance to Maine’s coastal communities, with a focus area in sustainable fisheries and aquaculture. Through extension professionals, Maine Sea Grant works closely with the state's growing number of seaweed farmers, businesses, regulators, and researchers, to develop local, regional, national, and international initiatives that support Maine’s growing seaweed sector.

The Gulf of Maine Research Institute (GMRI) is an independent, objective nonprofit organization dedicated to the resilience of the Gulf of Maine Ecosystem and the communities that depend on it, located on the Portland waterfront. GMRI is locally focused, and globally relevant - utilizing an interdisciplinary approach that combines world-class marine research with robust community and education programming to understand how natural, social, and economic systems interact.


Heritage Seaweed is “your friendly neighborhood seaweed store” and the founder of Seaweed Week! At their Portland-based shop, you can find specialty food, bath and body products, home goods, cookbooks, art, apparel, and gifts – all specially curated to spotlight Maine’s rapidly expanding seaweed marketplace and educate the community about what seaweed is and can be. Heritage Seaweed is also the maker of Cup of Sea, a line of seaweed-based tea.