Seafields, a company pioneering the management and farming of the invasive Sargassum seaweed species, has launched a second crowdfunding campaign, looking for financial backing to turn a coastal eco-crisis into a potent carbon removal solution.
According to Seafields, once deployed at full scale, their set of seaweed management innovations has the potential to remove up to 42 gigatonnes of CO2 from the atmosphere while also unlocking a multi-billion-dollar market for sustainable bio-feedstocks.
By March 2025, the company managed to secure $3.9 million (£2.9 million) in grants, equity, and debt funding. Its newly announced funding round has already garnered support from more than 140 investors, raising a total of $226,000 (£167,370) so far.
Set to end on 5 September 2025, this crowdfunding campaign gives angel investors and the public a chance to support Seafield’s operations at a share price of ~$8.15 (£6.04).
Sargassum seaweed is a significant issue in coastlines across the Caribbean region, where each year, millions of tonnes of this brown microalgae cover the shore, placing a burden on local ecosystems, tourism, and fishing industries.
To help address this problem, Seafields has developed a system that intercepts, manages, and cultivates Sargassum at scale, helping provide a valuable, year-round feedstock supply for bio-based industries while also generating carbon removal credits.
Its SeaClear platform is powered by custom-designed barriers that intercept the Sargassum seaweed before it reaches the shore and store it in water in the company’s proprietary Algaeponix paddocks.
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This provides a storing environment that keeps the seaweed fresh before being processed into feedstock for the production of skincare items, sustainable packaging, bioplastics, and biochar.
Through organized systems called SeaGrow farms, Seafields increases the feedstock production capacity, where a 60-paddock farm can produce 482,591 liters of biostimulant annually over a period of 10 years.
The company’s long-term vision is to create over 100 of these farms that would help the Caribbean region solve the problem of Sargassum while delivering both climate and social benefits.
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