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Coastal State Discussion: Sea Urchin Farming in New England

With the global demand for sea urchin roe, known as "uni," reaching up to $110 per kilogram, the aquaculture industry is increasingly looking to sea urchin farming as a sustainable solution. Rhode Island's shellfish and kelp farmers are among those exploring the potential of farming these "porcupines of the sea" to meet the demand in U.S. and Asian markets, where uni is highly sought after in sushi and high-end seafood cuisine. As wild sea urchin stocks face overfishing and habitat loss pressures, sustainable farming practices are essential to protect these valuable populations and support a viable industry. Chapters: Dr. Coleen Suckling from the University of Rhode Island and Dana Morse of the Maine Sea Grant/University of Maine discuss the latest research and initiatives to advance sea urchin aquaculture in New England–specifically purple and green sea urchin species.. This includes: ✅ The ecological and economic benefits of urchin farming ✅ Cutting-edge research on hatchery production techniques ✅ Opportunities for aquaculture diversification in Rhode Island and Maine Chapters: 04:52 Introduction 06:46 The Role of Green Sea Urchins in Aquaculture 08:11 Market Potential for Sea Urchin Roe (Uni) 13:40 Green Sea Urchin Fishery and Management 15:16 Decline of Sea Urchin Stocks 16:50 Emerging Aquaculture Sector 19:56 Hatchery Processes: Inducing Reproduction 24:41 Larval Development and Tank Management 27:22 Sea Urchin Feeding Strategies in Hatcheries 29:06 Advances in Biofilm and Macroalgae Diets 35:21 Seed to Farm: Gear Recommendations 37:31 Scalability and Feeding 41:53 Key Aquaculture Challenges 42:59 Increasing Awareness 47:57 Resources 49:02 Integrating Sea Urchins into Polyculture Systems 54:26 Biofouling Experiment 01:02:58 Modeling Tools 01:05:41 Purple Sea Urchin Aquaculture Potential 01:09:40 Integrating Purple Urchins & Eastern Oysters 01:14:23 Building Partnerships in Rhode Island 01:16:25 Resources 1:17:12 Q&A