Unsupported Browser Detected

Internet Explorer lacks support for the features of this website. For the best experience, please use a modern browser such as Chrome, Firefox, or Edge.

Tide to Table Profiles: Atlantic Sea Farms

October 29, 2021

Atlantic Sea Farms is a maker of seaweed specialty products located in Saco, Maine.

A smiling Atlantic Sea Farms employee stands on a dock while holding up a jar of 'Atlantic Sea Farms Fermented Seaweed Salad.' Atlantic Sea Farms specializes in specialty kelp products such as fermented seaweed salad (pictured), kelp smoothie cubes, kelp sauerkraut, kelp kimchi, and more. Credit: Atlantic Sea Farms.

In the chilly waters of the Gulf of Maine, Atlantic Sea Farms works with a close community of Maine lobstermen. They grow and harvest skinny kelp and sugar kelp and processes that kelp into culinary products. Through their program Kelp to the Kitchen: Bringing Seaweed and Chefs Together, they also partner with industry personnel to educate others on the culinary uses of seaweed.

Atlantic Sea Farms supports their community of kelp farmers by providing free kelp seeds with a buy-back guarantee that they will purchase the fully raised seaweed at harvest. Additionally, Atlantic Sea Farms’ team provides training, auditing, and support services throughout the season, and assists with farm siting. As a result, the number of Maine kelp farmers has boomed. In just 2 years, Atlantic Sea Farms partner farmers (almost entirely made up of Maine lobstermen diversifying into kelp in their off-season) have come to represent more than 80 percent of cultivated seaweed in the United States.

Atlantic Sea Farms is working to make kelp aquaculture a profitable and viable long-term diversification strategy for working waterfront communities. According to the seaweed company, Maine lobstermen already possess the boats and on the water skills required for growing high quality kelp. They are particularly well positioned to lead in seaweed aquaculture in the United States. 

Using the freshly harvested kelp, Atlantic Sea Farms creates unique, nutrient-dense products such as seaweed salad, kelp smoothie cubes, kelp sauerkraut, and kelp kimchi. Chief Executive Officer Bri Warner states, “Our company’s goal is to create craveable products that increase demand for line grown seaweed from Maine. Fresh kelp is both nutritious and regenerative; it’s an ideal way to increase our positive impact on coastal communities and the ocean.”

Three aquaculture workers on an Atlantic Sea Farms boat pull a long line of market-ready kelp from the water.
Growing seaweed on our coasts adds jobs to local economies, provides ecosystem services, and broadens our access to fresh, sustainable seafood. Credit: Atlantic Sea Farms.

A Focus on Sustainability

Recently, Warner has pivoted the company to also include helping farmers diversify into kelp to help counter climate change. Growing kelp locally provides a domestic, fresh, healthy alternative to imported seaweed products. It also helps the environment—kelp farming requires no arable land, pesticides, or herbicides and helps reduce ocean acidification effects around farms.

The timing of kelp farming is also convenient for growers. Seaweed is grown in the winter, which is the off-season for lobster. Warner notes that more than 4,000 lobstermen on the coast of Maine can potentially use this crop as an added source of income. Today, Atlantic Sea Farms has 24 partner farmers along the coast, most of whom are lobstermen or fishermen diversifying their income.

From Farm to Table

Farmed kelp is grown underwater on long horizontal lines, about 7 feet below the surface. The lines of kelp stay suspended in the water until harvest time. Fully grown kelp can reach 10 feet long. In addition to the free seeds and buy-back promise, Atlantic Sea Farms provides technical assistance and lease support.

More than 1,300 retailers nationwide carry their seaweed products, including Whole Foods Market, Wegmans, Sprouts, and other natural grocery stores. The farm has also partnered with restaurants such as Sweetgreen, B.GOOD, Legal Seafood, Daily Harvest, and Little Beet to introduce diners to the versatility of seaweed.

Fun Fact

When growing underwater or served raw, kelp is naturally brown in color. It only turns green when exposed to hot water. 

Recipe: Superfood Kelp Smoothie

Not sure about seaweed? Try a seaweed smoothie blend.

A glass of superfood kelp smoothie next to some kelp cubes and an Atlantic Sea Farms Kelp Cubes box.
Loaded with vitamins, minerals, and antioxidants, kelp is a healthy choice for people and the environment. Credit: Atlantic Sea Farms.


  • 1.5 cups almond milk
  • 1 handful fresh spinach
  • 1 frozen banana, cut into pieces
  • 1 Atlantic Sea Farms Kelp Cube
  • 1 teaspoon honey
  • 1/2 teaspoon fresh ginger
  • Squeeze of lime


  1. Place all of the ingredients in a high-speed blender; blend on high until smooth.

Learn more about Atlantic Sea Farms

Sustainable Seafood from Tide to Table

The Tide to Table series profiles members of the aquaculture community, who provide valuable jobs and increase access to fresh, sustainably sourced American seafood. Aquaculture is about more than seafood production. It is about ecosystem stewardship, coastal communities, and economic opportunities.


Last updated by Office of Aquaculture on November 02, 2021