Announcement for California Seaweed Festival on October 10-11 in Los Angeles, with 'Save the Date' message.

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California Seaweed Festival at Sea Fair

In collaboration with AltaSea and Cabrillo Marine Aquarium, the 6th Annual California Seaweed Festival will take place October 10 - 11, 2025.

Location: San Pedro in the Los Angeles Harbor

Theme: Urban Ocean Ecosystems

If you have ideas on hosting a panel, workshop, or demonstration feel free to contact us at hello@californiaseaweedfestival.org

Vendor and Exhibitor Application 2025

Want to offer your art, products or information to a seaweed friendly crowd?

The California Seaweed Festival attracts seaweed enthusiasts from across the west coast, as well as a broad audience of interested locals. With an expected attendance of 3,000+ attendees, it is a great place to present your seaweed related products and information to an engaged and curious audience!

  • Deadline: Priority - July 31st, 2025 at 11:59pm (Space is limited!)

    (Late Fees Apply From August 1st)

  • Submission CLICK HERE TO APPLY

  • Details: We welcome vendors of food, art, products and services related to seaweeds and ocean ecology. Informational tables for non-profits receive a discount on the vendor fee.

Express your interest here: CLICK HERE TO APPLY

For questions email us here.  

OUR STORY

The California Seaweed Festival arose from decades of studying seaweeds, admiring their beauty and learning myriad ways that seaweeds make life better. We want to share the beauty and diversity of seaweeds on our coasts. 

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Help us celebrate seaweeds in California by becoming a sponsor!

Our 2025 Sponsors

Sunken Seaweed Humboldt logo with stylized seaweed graphic in teal.
Sway
Logo of 'The Azulito Fund' with teal text on a black background.
California Sea Grant logo with stylized seagull silhouette.

Join us, we’re social!

It’s always a good time to celebrate seaweeds in California.

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Job Description: Program Manager LINK IN BIO FOR APPLICATION AND FULL INFORMATION Position: Part-Time Contract (average 10 hours/week for 10 months of February - November 2025) Salary: Commensurate with experience: $1200-1700/month Location: Remo