The Global Seaweed Protein Market was valued at USD 485.7 Million in 2025 and is projected to reach USD 982.3 Million by 2032, growing at a Compound Annual Growth Rate (CAGR) of 9.8% during the forecast period (2024–2032). This remarkable growth is being driven by surging global demand for sustainable, plant-based proteins, heightened consumer awareness of marine-sourced nutrients, and the increasing versatility of seaweed protein in food, feed, and personal care applications.

As the global food system pivots towards more eco-friendly and health-conscious ingredients, the spotlight is on the key players who are commercializing marine-based nutrition. In this blog, we profile the Top 10 Companies in the Seaweed Protein Industry—a dynamic mix of established hydrocolloid giants, pioneering aquaculture firms, and sustainable ingredient specialists shaping the future of protein.

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🔟 1. CP Kelco

Headquarters: Atlanta, Georgia, USA
Key Offering: Seaweed-derived hydrocolloids, specialty ingredients, and protein-enriched extracts.

A subsidiary of JM Huber Corporation, CP Kelco is a global leader in specialty hydrocolloids with a formidable presence in seaweed-based ingredients. Leveraging its deep expertise in marine biopolymers, the company is advancing its portfolio to include functional protein concentrates and isolates for the food and beverage industry.

Innovation & Sustainability Initiatives:

• Investment in R&D for high-yield protein extraction from red and brown seaweeds.
• Strategic partnerships with global food brands to integrate seaweed protein into product formulations.
• Commitment to sustainable sourcing through its global supply chain network.

Download FREE Sample Report: Global Seaweed Protein Market – View in Detailed Research Report

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9️⃣ 2. Acadian Seaplants Limited

Headquarters: Dartmouth, Nova Scotia, Canada
Key Offering: Marine plant extracts, Ascophyllum nodosum-based ingredients, Seaweed Protein concentrates.

Acadian Seaplants is a world leader in the cultivation and processing of North Atlantic marine plants. The company has pioneered proprietary harvesting and extraction technologies, producing high-quality, organic-certified seaweed proteins for the animal nutrition, agriculture, and emerging human food markets.

Innovation & Sustainability Initiatives:

• Vertically integrated operations from ocean farming to finished product.
• Focus on climate-positive marine agriculture and biodiversity enhancement.
• Development of novel protein applications for health supplements.

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8️⃣ 3. Algaia (a subsidiary of Groupe Roullier)

Headquarters: Paris, France
Key Offering: Alginate solutions, seaweed extracts, and specialty marine proteins for food and nutrition.

Algaia utilizes its advanced biorefinery platform to produce a range of functional ingredients from sustainable seaweed sources. The company is actively developing its seaweed protein portfolio, targeting the booming markets for clean-label and texture-enhancing ingredients in Europe and North America.

Innovation & Sustainability Initiatives:

• Investment in enzymatic hydrolysis technologies for premium protein isolates.
• Strong alignment with the EU’s Farm to Fork strategy, promoting local seaweed cultivation.
• Partnerships with research institutes to explore protein bioavailability and health benefits.

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7️⃣ 4. Cargill, Incorporated

Headquarters: Minneapolis, Minnesota, USA
Key Offering: Global ingredient supply, including plant proteins and emerging marine ingredients.

As a global agricultural powerhouse, Cargill is strategically expanding its alternative protein portfolio to include sustainable marine sources. The company leverages its vast supply chain and customer relationships to scale the adoption of seaweed protein in animal feed and human food applications.

Innovation & Sustainability Initiatives:

• Active partnerships with seaweed farming ventures in Norway and Asia for secure sourcing.
• R&D focus on improving the sensory profile of seaweed protein for mainstream food products.
• Commitment to ocean health as part of its broader sustainable ingredient strategy.

Download FREE Sample Report: Global Seaweed Protein Market – View in Detailed Research Report

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6️⃣ 5. Gelymar S.A.

Headquarters: Puerto Montt, Chile
Key Offering: Carrageenan and alginate-based ingredients, seaweed-derived functional proteins.

Gelymar is a major producer of marine hydrocolloids in Latin America, sourcing seaweed from the pristine waters of Chile. The company is expertly positioned to extract and commercialize co-products like proteins from its core processing streams, offering integrated solutions to the food industry.

Innovation & Sustainability Initiatives:

• Development of protein recovery processes from carrageenan and alginate production.
• Strong commitment to regenerative aquaculture and traceable sourcing practices.
• Focus on supplying the Latin American and North American health food markets.

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5️⃣ 6. Algea (a subsidiary of Valagro)

Headquarters: Trondheim, Norway
Key Offering: Ascophyllum nodosum extracts, marine biostimulants, and protein-rich seaweed powders.

Part of the Syngenta Group, Algea specializes in high-quality seaweed extracts from the Norwegian coast. While historically focused on agriculture and animal health, the company is channeling its biomass expertise into developing nutrient-dense protein ingredients for the nutraceutical sector.

Innovation & Sustainability Initiatives:

• Utilization of mild, eco-friendly extraction methods to preserve protein integrity.
• Investment in circular economy models within its production facilities.
• Exploration of synergistic effects between seaweed proteins and other bioactive compounds.

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4️⃣ 7. CEAMSA (Compañía Española de Algas Marinas S.A.)

Headquarters: Porriño, Spain
Key Offering: Carrageenan, agar-agar, and functional marine ingredients, including protein fractions.

CEAMSA is a prominent European manufacturer of phycocolloids with decades of experience in seaweed processing. The company is actively innovating to valorize its entire seaweed biomass, developing protein co-products that meet the growing demand for sustainable, E.U.-sourced ingredients.

Innovation & Sustainability Initiatives:

• Implementation of advanced separation technologies to isolate high-value proteins.
• Focus on producing ingredients for the vegetarian and vegan markets in Europe.
• Commitment to sustainable harvesting and aquaculture to ensure long-term biomass supply.

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3️⃣ 8. Qingdao Gather Great Ocean Algae Industry Group

Headquarters: Qingdao, Shandong, China
Key Offering: Comprehensive seaweed products, including refined algae powders, carrageenan, and protein extracts.

As a major integrated player in China’s vast seaweed industry, this group controls a significant portion of the raw material supply and processing capacity. It is a key supplier of cost-effective seaweed protein concentrates for both the domestic Chinese market and global export.

Innovation & Sustainability Initiatives:

• Large-scale, efficient processing infrastructure enabling competitive pricing.
• Investment in R&D to improve the functional properties of its protein offerings.
• Expansion of product lines to cater to the growing Asian health and wellness sector.

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2️⃣ 9. The Seaweed Company

Headquarters: Amsterdam, Netherlands
Key Offering: Sustainably farmed seaweed, whole-food seaweed ingredients, and novel protein products.

The Seaweed Company focuses on regenerative ocean farming to produce premium, traceable seaweed. It is an agile innovator, developing whole-food and minimally processed seaweed protein ingredients that appeal to environmentally conscious consumers and brands seeking transparency.

Innovation & Sustainability Initiatives:

• Proprietary offshore and nearshore farming techniques that enhance biodiversity.
• Development of consumer-facing branded products featuring seaweed protein.
• Strong emphasis on measuring and communicating the carbon sequestration benefits of its farming operations.

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1️⃣ 10. Seasol International

Headquarters: Bayswater, Victoria, Australia
Key Offering: Liquid seaweed extracts, soil conditioners, and specialty biomass for feed and food.

A leader in the Southern Hemisphere, Seasol’s expertise lies in processing the unique Bull Kelp (Durvillaea potatorum). The company is expanding beyond its traditional agricultural base to explore the protein potential of its kelp biomass for animal feed and emerging human food applications.

Innovation & Sustainability Initiatives:

• Pioneering work with native Australian seaweed species.
• Commitment to wild-harvesting practices that promote kelp forest regeneration.
• Research into the superior mineral and amino acid profile of its kelp-derived proteins.

Get Full Report Here: Global Seaweed Protein Market – View in Detailed Research Report

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🌊 Outlook: The Future of Seaweed Protein Is Integrated and Scalable

The seaweed protein market is transitioning from a niche ingredient to a mainstream sustainable protein solution. While technological and supply chain hurdles remain, the industry is attracting significant investment to overcome these challenges and unlock the full potential of the ocean’s harvest.

📈 Key Trends Shaping the Market:

• Accelerated investment in offshore aquaculture and mechanized harvesting to secure supply.
• Convergence of food-tech and marine biotech, leading to next-generation extraction and fermentation processes.
• Rising demand from the pet food and aquaculture feed sectors as a functional protein booster.
• Increasing regulatory support and consumer pull in major markets for sustainable “blue foods.”

Get Full Report Here: Global Seaweed Protein Market – View in Detailed Research Report

The companies profiled above are not only harvesting from the sea—they’re building the foundational supply chains and technologies for a new era of marine-based nutrition.