This portable, real-time monitoring platform supports marine carbon dioxide removal (mCDR) by measuring key indicators such as nutrient cycling, photosynthesis, respiration, and dissolved carbon. Designed for scalable deployment, the system enables continuous, high-resolution data collection to assess both environmental health and carbon storage. It provides end-to-end monitoring, reporting, and verification (MRV) so that ecological risks can be tracked and carbon credits reliably issued. This solution builds trust in ocean-based carbon removal and supports ESG compliance, regulatory approvals, and responsible climate action