Atlantic Sea Farms

Atlantic Sea Farms is a mission-driven seaweed company based in Biddeford, Maine. They're the largest domestic seaweed supplier at scale in the United States—the first operation to crack that infrastructure problem—and they partner with over two dozen Maine fishing families to grow regenerative kelp on rope lines off the coast. CEO Briana Warner took over the company and transformed it into a national force in sustainable food production. It's a genuinely original story in American food.

The model is built around solving two problems at once. Maine fishing families face real economic pressure as traditional fisheries decline and climate change disrupts seasonal patterns. Kelp farming gives them a viable cold-season crop that doesn't compete with summer fishing—it can be harvested in late winter and spring, providing income during the dead months. And kelp farming improves ocean health, absorbing excess carbon and locally mitigating ocean acidification. You're buying a product that actively repairs the ecosystem it comes from.

The kelp itself is nutritionally serious. It's one of the richest food sources of iodine on the planet, which matters especially for people avoiding dairy or iodized salt. Atlantic Sea Farms produces fresh-frozen kelp, dried kelp, kelp flakes and powder, and a line of value-added products including seaweed salads and seasoned preparations. Their Spicy Gochujang Seaweed Salad has been praised by national food media as the kind of thing you keep reaching back into the jar for. The products are in restaurants, grocery stores, meal-kit companies, and campus dining programs nationwide.

The company operates out of an SQF-certified processing facility and handles everything from harvest to consumer product under one roof. Independent, mission-driven, and building the domestic seaweed industry from scratch—Atlantic Sea Farms is what it looks like when a company solves a real problem instead of chasing a trend.

Products

• Fresh-frozen bulk kelp
• Dried kelp flakes and powder
• Spicy Gochujang Seaweed Salad
• Seaweed salad varieties (retail and food service)
• Wholesale ingredient kelp for manufacturers and restaurants

Why We List Them

• Independently owned and mission-driven
• Founded to support Maine's coastal fishing families
• Largest domestic seaweed supplier at scale in the US
• SQF-certified processing facility
• Regenerative farming model improves ocean health
• No corporate parent — Briana Warner leads an independent operation
• National distribution through grocery, food service, and direct