Almost every marine carbon-removal method only removes atmospheric CO₂ when the ocean draws it out of the air — a flux that takes months to a year and varies enormously by location. This map shows where that actually happens.

• Efficiency — the fraction of added alkalinity that becomes realized atmospheric removal (green = fast/high, red = slow). Toggle 1 / 5 / 10-year horizons.
• Submeso-corrected — efficiency after the subduction penalty at deep-mixed-layer fronts the coarse atlas misses.
• Verifiable-realization potential — where the removal cashes and can be measured in place (retention × carbonate capacity).
• National EEZ efficiency — mean efficiency inside each nation's waters.
• Deployments — real companies, colored by method; filter by family or by whether they're air-sea gated vs physics-exempt. Click any for detail.

Search a company, a coastline, or coordinates. Click anywhere on the ocean for a local efficiency readout. A first-order research screen, not bankable diligence.