The ocean soaks up some 30 to 40% of all the greenhouse gas human activities produce. A new method for removing it from the ocean could be far more efficient than existing systems for removing it from the air. It could be implemented by ships processing seawater as they travel, or at offshore drilling platforms, or aquaculture fish farms. Once the CO2 is removed from the water, it can be buried in deep geologic formations under the sea floor, or chemically converted into a compound like ethanol, and used as transportation fuel, or into other specialty chemicals. For the MIT process to do this, check the link below.
news.mit.edu/2023/carbon-dioxide-out-seawater-ocean-decorbonization-0216