It is indeed a pitty. Imagine how much carbon could be captured if these pesky seas had their fair share of trees.
Or maybe we should replace all the trees by Oceans, because they're a much more efficient carbon sink !
Well good news then! This seems to be the current strategy.
It's quite hard to imagine, because those trees could mess up other carbon sequestration cycles already present in oceans. E.g. phytoplankton uses CO2 but need sunlight to do so.
The ocean captures a lot of CO2…
Also, they aren't known for having high densities of people, unlike the east coast of the US.
Except on cruise ships ... 2000-3000 per boat, though, yeah, nothing like Manhattan
Sure, but consider the density of population covered by a single satellite in space. You could have dozens of boats serviced by a single satellite and have much, much lower density than any city.
Since it's the middle of the ocean, you're competing with nobody else (besides, maybe, large ships that also pay for Starlink)