News | June 10, 2021

Blue Ocean Barns Closes Funding Round For Production Of Methane-Cutting Seaweed


Blue Ocean Barns announced the closure of a new, $5 million seed round of capital, bringing the sustainable agriculture company’s total raised to date to $6.6 million.

The funding round, led by Valor Siren Ventures, will support a significant expansion of Blue Ocean Barns’ farming operations as it readies for commercial sale of its seaweed-based cattle supplement. This week, Blue Ocean Barns signed a lease for 10 additional acres of growing space near its existing operations on the Big Island of Hawai’i.

“Blue Ocean Barns is driven by our mission to mitigate climate change by slashing cattle methane emissions by more than 80%,” said Joan Salwen, co-founder and CEO of Blue Ocean Barns. “Alongside our investors in our most successful fundraising round to date, we’re ready to expand operations, provide a sustainable feed supplement for cattle farmers committed to shrinking their carbon footprint, and assist forward-thinking dairy and beef companies eager to face climate challenges head-on.”

Blue Ocean Barns produces a cattle supplement made with a specific type of seaweed, Asparagopsis, that has been proved in multiple university studies to reduce methane output from cattle by more than 80%, eliminating a greenhouse gas that is at least 28 times more potent than carbon dioxide. In addition, research from the University of California, Davis, showed that cattle given a supplement derived from the same seaweed grown by Blue Ocean Barns lowered farmers’ feed requirements by 14% with little to no impact on cattle weight. Dairy and beef trials have shown that the seaweed supplement is safe and does not impact the flavor, fragrance or texture of milk or beef.

Blue Ocean Barns is the first U.S. licensee for FutureFeed, the global IP holder for the technology of feeding the red seaweed Asparagopsis to cattle. Blue Ocean Barns has 11 pending applications with the U.S. Patent and Trademark Office for technology related to the growth, cultivation and compositions of the seaweed.

Blue Ocean Barns plans to make its proprietary, seaweed-based feed supplement commercially available to farmers and beef producers later this year.

About Blue Ocean Barns

Blue Ocean Barns is a Delaware Public Benefit Corporation with a mission to support producers of meat and dairy in improving farmers’ business outcomes while significantly reducing the climate impact of cattle. The company, with operations in Kailua Kona, Hawaii, and San Diego, California, is the global technology leader in the production of red seaweed, the most effective feed supplement solution to greenhouse gas emissions. Blue Ocean Barns is scheduled to make its product commercially available by the end of 2021. Find out more at

About Valor Siren Ventures

Valor Siren Ventures’ (VSV) mission is to be the leading innovation engine and investor in early-stage food, food technology, and retail technology investing. Rooted in Valor’s history of food and retail technology, Valor believes there is an opportunity to develop a new model for venture investing with VSV. Its team aspires to create value by generating differentiated investment opportunities, applying our intellectual capital, and accelerating the growth of portfolio companies through operations assistance in scaling.

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