Top Highlights

• If cost gaps are closed, a significant amount of carbon emissions could be avoided. 1 million tons of seaweed used for biostimulants could lead to 0.1 – 0.4 megatons of avoided CO 2 e emissions per year. If additional interventions are made or incentives created to grow seaweed biostimulant demand further to 3 million tons wherein 3% of global crop...
• There is significant energy among NGOs, corporations, startups, governments, and others to explore how seaweed can play a role in sequestering carbon and reducing greenhouse gas (GHG) emissions in supply chains by substituting seaweed for other products, bring us closer to a net-zero emissions future
• Assessing the creation of a carbon crediting program to provide supplemental income to existing seaweed farmers who adopt practices to increase carbon sequestration and/ or new seaweed farmers who are interested in obtaining carbon financing; and 2. Stimulating demand for sustainably grown seaweed by supporting the growth of new end markets for sea...
• Recent analyses have found seaweed farms sequester carbon in marine sediment in quantities ranging from 0 to 8.1 tons of carbon dioxide equivalent per hectare (CO2 e/ ha), with a median net sequestration of approximately 0.5 tons of CO 2 e/ha
• Given carbon crediting requirements for additionality (e.g. behavior change) and discounts (e.g. uncertainty), current blue carbon prices at approximately USD$30/ton would not provide significant supplementary income for existing farmers or create economic incentives to establish new seaweed farms, even when using much larger than the median rates ...

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