During her doctoral research, Judith investigates macroalgae cultivation as a marine carbon dioxide removal (mCDR) pathway, focusing on the interplay between technical feasibility and societal desirability. Drawing on data from pilot projects and experimental deployments, the work identifies and traces the full process chain -- from cultivation and biomass conversion (e.g. pyrolysis, hydrothermal carbonisation) to long-term storage and co-product utilisation. The research begins with estimating the potential and costs of macroalgae cultivation across its environmental and technical dimensions, providing inputs for integrated assessment models that explore large-scale implications and compare mCDR methods. Beyond feasibility, the research -- conducted in collaboration with the ASMASYS and CDRmare teams -- also addresses issues of desirability, including governance, trade-offs, and public acceptance. This interdisciplinary approach ensures that evidence from pilot studies and aquaculture practice, combined with stakeholder involvement, informs the design of sustainable, scalable, and societally acceptable macroalgae CDR pathways. Ultimately, the project seeks to provide a holistic assessment that supports responsible decision-making on the role of macroalgae cultivation within global CDR portfolios.