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Outcomes and Reflections from the 2025 WIOMSA mCDR Special Session and Post-WIOMSA Workshop

The WIOMSA Special Session: Building a Scientific Foundation

Co-led by Dr. Mariam Swaleh and Dr. Matt Long ([C]Worthy), the Special Session set the scientific and policy groundwork for Africa’s emerging mCDR roadmap.

Dr. Swaleh presented Africa’s Roadmap for Marine Carbon Dioxide Removal, a framework linking mCDR to research, entrepreneurship, and sustainable development. The roadmap was born from a workshop organized by Ocean Visions earlier in the year that brought together participants from 13 African countries spanning North, East, South, and West Africa. She highlighted that Africa’s long coastline, mineral wealth, and youthful population make it uniquely positioned to lead in responsible ocean-based carbon removal.

“MCDR is not just a scientific experiment; it is an opportunity to build a new economy that links climate solutions with livelihoods and innovation,” she said.

She called for greater investment in local capacity, partnerships, and inclusive governance to ensure that mCDR activities on the continent are African-led. Addressing funding constraints, technical gaps, and political will, Dr. Swaleh asserted the need to translate science into enterprise and impact.

Dr. Long outlined the scientific foundations of marine CDR and reinforced that emissions reductions alone will not meet global climate targets. Africa’s vast coastline and diverse ecosystems, he noted, present unique opportunities for responsible ocean-based carbon removal rooted in science and transparency.

Speakers also stressed the importance of durable CDR, trade-offs between , “trade-offs between chemistry or mineral-based and biology or photosynthesis-based pathways (also known as abiotic and biotic)”, and robust Monitoring, Reporting, and Verification (MRV) systems to unlock carbon market finance.

The technical session, featuring Dr. Alicia Karspeck ([C]Worthy), Dr. Leila Kittu (GEOMAR), and Drs. Joseph Kamau and Anthony Nzioka Mutua (KMFRI), explored how Africa can advance marine carbon dioxide removal through credible science and responsible practice. They emphasized that robust MRV systems are essential for trust and investment and that ecosystem benefits and losses must be anticipated early to protect biodiversity and livelihoods.

Dr. Kamau observed, “Understanding the ocean’s baseline is key to avoiding unintended impacts,” while Dr. Mutua added, “MCDR must strengthen the very communities that depend on the sea.” Their reflections bridged scientific research into governance and community discussions.

The governance and community session included Dr. Sware Semesi, Mr. Edwin Mwashinga (IOC UNESCO), and Ms. Evelyn Kimori (LAMCOT), who explored how policy frameworks, communication, and community ownership can ground Africa’s marine carbon efforts in local realities.

Dr. Semesi noted that “coastal communities are already benefiting from blue carbon projects; integrating mCDR into policy can amplify those gains.” Mr. Mwashinga called for “legal anchoring and policy harmonization” across African states, while Ms. Kimori emphasized that effective science communication is vital for public trust.

Dr. Swaleh concluded, “Our task is to ensure mCDR works for Africa, anchored in science, guided by community wisdom, and built on hope for a climate-positive future.”

The Post-WIOMSA Workshop: Catalyzing Capacity and Collaboration

Science, Safety, and the Way Forward