Lest people think "ooh, this is great!" -- it's not, at least not beyond "having a better understanding of the world is good".<p>The following might be reasonable (if not necessarily feasible) carbon sinks:<p><pre><code> - Conversion to other materials (plastic, graphite, fuel (sort of))
- Injection into salt domes
</code></pre>
The following are bad carbon sinks:<p><pre><code> - Your lungs
- The ocean
</code></pre>
CO2 dissolving in the ocean produces carbonic acid, and ocean acidification is a huge problem -- it dissolves the shells of a number of creatures, and fucks up the <i>entire biochemistry</i> of the ecosystem. Remember, a lot of bacteria (including ones right at the bottom of the food web) use the ocean water as a sort of communal extracellular medium for nutrient exchange, and pH affects nutrient availability differently for different nutrients. Changing the pH throws everything out of whack, just like making your blood more acidic or basic would hurt or kill you.
Co2 absorption is likely also enchanced by water/air mixing that exists in uneven shore terrain, like bays/fjords/reefs/underwater rocks/etc which create powerful underwater currents with tides and weather.
<a href="https://journals.ametsoc.org/doi/abs/10.1175/1520-0485(1989)019%3C0917:VMIBWO%3E2.0.CO;2" rel="nofollow">https://journals.ametsoc.org/doi/abs/10.1175/1520-0485(1989)...</a>
<a href="https://www.sciencedirect.com/science/article/pii/0037073880900068" rel="nofollow">https://www.sciencedirect.com/science/article/pii/0037073880...</a>
There is also a biological component:
<a href="https://www.sciencemag.org/news/2018/04/tiny-shrimp-may-be-mixing-ocean-water-much-wind-and-waves" rel="nofollow">https://www.sciencemag.org/news/2018/04/tiny-shrimp-may-be-m...</a>
Two stories just out of HWU, both related to the uptake of CO2 by the oceans and apparently pointing in opposite directions.<p><a href="https://www.hw.ac.uk/about/news/new-research-reveals-ocean-waves-play.htm" rel="nofollow">https://www.hw.ac.uk/about/news/new-research-reveals-ocean-w...</a><p><a href="https://www.hw.ac.uk/about/news/invisible-barrier-on-ocean-surface-reduces.htm" rel="nofollow">https://www.hw.ac.uk/about/news/invisible-barrier-on-ocean-s...</a>
Tangential: Biosphere 2 had CO2 absorption issues with the concrete of the superstructure. <a href="http://biology.kenyon.edu/slonc/bio3/2000projects/carroll_d_walker_e/whatwentwrong.html" rel="nofollow">http://biology.kenyon.edu/slonc/bio3/2000projects/carroll_d_...</a>