The California Seaweed Festival arose from decades of studying seaweeds, admiring their beauty, and learning myriad ways that seaweeds make life better.

The California Seaweed Festival is an in-person, family-friendly non-profit event celebrating the seaweed diversity of California and held in a different California coastal location each year. The festival showcases seaweed uses and applications in art, cooking, farming, science, sustainable technology and conservation through booths, exhibits, workshops, demonstrations, galleries and hands-on activities. Social events allow seaweed enthusiasts from all sectors to connect with one another. Tours provide an opportunity to see seaweeds in their habitats and in commercial operations. And a video archive preserves a portion of each festival's content for the future.