https://www.theatlantic.com/magazine/archive/2020/01/20000-feet-under-the-sea/603040/
Finally finished reading this over many lunches.
«About a third of the carbon dioxide generated on land is absorbed by underwater organisms, including one species that was just discovered in the CCZ in 2018. The researchers who found that bacterium have no idea how it removes carbon from the environment, but their findings show that it may account for up to 10 percent of the volume that is sequestered by oceans every year.»