A free, one-day expo of seaweed food, art, and fun on the Portland waterfront

Yes! Seaweed Saturday is completely free and open to all. Enjoy a full day of interactive activities, demos, and exhibits at no cost. While all programming is free, some exhibitors in the marketplace will have seaweed-inspired products available for purchase.

There are a limited number of free parking spaces directly in front of the GMRI building on Commercial Street. Across the street you'll find paid street parking. If you'd like to park in a lot for the day, the Fish Pier Front Lot (320 Commercial Street) is a 3 minute walk from GMRI and has space available on most weekends. Cost is $15 for the day and can be paid by phone or in-person at the Spring St. Garage (45 Spring Street).

Sorry, we love dogs, but since this is a research and education facility, we can’t accommodate pets. Thanks for understanding!

Yes! The building is fully accessible, with restrooms on the first floor and elevators providing access to the second and third-floor atriums where exhibitors will be located. Outside, the event space includes both paved areas and a lawn, where the tent will be. If you have specific accessibility needs, feel free to reach out—we’re happy to help!