This report collates and scrutinizes existing research on the quantifiable climate benefits, as well as the associated environmental and social risks and benefits, of global seaweed farming. The scope of the report includes an investigation into the full value chain of seaweed farming with an emphasis on the potential for climate benefits realized through various natural and commercial use pathways, and the feasibility of upscaling global farmed seaweed production. The findings herein are synthesized in a situational analysis with a SWOT design (Strengths, Weaknesses, Opportunities, and Threats) for sustainable expansion of global seaweed farming.