The California Seaweed Festival is a free, family-friendly event celebrating the seaweed diversity of California! The festival showcases seaweed ecology as well as applications in art, cooking, farming, science, sustainable technology, and conservation.
The festival moves to a different coastal location each year, so, every festival is unique, and carefully crafted to showcase how seaweed and ocean ecology intersect and support the coastal communities.
DAy 1 - Ocean futures happy hour & film sequoias of the sea
thursday, October 9th
When: 7 am - 7 pm
Where: Santa Monica, California
Join us for Ocean Futures Happy Hour & Film Sequoias of the Sea—an evening of community, conversation, and ocean storytelling.
Bookended by IGNITE22: Global Showcase and the California Seaweed Festival, this event brings together ocean innovators, advocates, and storytellers for a night of ocean sustainability.
Happy hour tickets - $10
Happy Hour & Screening Ticket - $20
Register to See Address
Day 2 - Seaweed Speakeasy Fundraiser
Friday, October 10th
When: 4 pm - 9 pm
Where: AltaSea, Land’s End Berth 60, 2451 South Signal Street, San Pedro, CA, 90731
Join the California Seaweed Festival in collaboration with Blue Robotics, California Institute for the Arts and AltaSea for an exclusive evening of connection, innovation, and collaboration at the 2025 Seaweed Speakeasy! The curated evening will bring together start-ups, researchers, investors, policy leaders, and creatives who are transforming how we work with ocean ecosystems in the rapidly evolving Blue Economy. We’re building a future where seaweed is key to California’s coastal health and flourishing economy.
Purchase Tickets
day 3 - California Seaweed Festival at Sea Fair
Saturday, October 11th
When: 10 am - 6 pm
Where: Cabrillo Marine Aquarium
Festival Theme: Urban Ocean Ecosystems
Hands-on activities, Vendors, Food & Cooking Demos, Science & Technology, Live Music, Magical Creatures, Touch Tanks & more
All day fun free activities: Seaweed Pressing, Seaweed Printing, Seaweed Collage Table, Epoxy Resin Pendant making - limited, Seaweed Jenga, Meet the Mermaid’s of the Kelp Forest, and more!