From Just Have a Think.
Our oceans absorb about 30% of all the carbon dioxide that we humans spew into our atmosphere, and about 90% of the consequent planetary heat. If that process didn’t happen then our planet would be uninhabitable for us humans. New research has revealed that our understanding of how carbon is sequestered in the mid layers of the oceans and down on the deep sea floor has been wrong. That is prompting a rethink of how our human activities, including deep-sea mining, might have more profound impacts than we previously imagined.
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Reference Links
NORI- D research paper
https://www.nature.com/articles/s41467-025-65625-y
The Mining Company website
https://metals.co/mining-the-facts/
MDPI assessment of environmental impact of deep sea mining plumes
https://www.mdpi.com/2077-1312/13/10/1987
Bayer et al – Minor contribution of ammonia oxidizers to inorganic carbon fixation in the ocean
https://www.nature.com/articles/s41561-025-01798-x
Science Daily – The deep ocean is fixing carbon in ways no-one expected
https://www.sciencedaily.com/releases/2025/12/251210092024.htm
The Verge – How deep=sea mining could threaten a vital ocean food source.
https://www.theverge.com/news/814694/deep-sea-mining-waste-battery-metals-research-trump?utm
Integrated Assessment Paper
https://assets-eu.researchsquare.com/files/rs-6631838/v1_covered_a6c0da29-f83d-4078-8ae7-96f7eea1bae2.pdf?c=1752003021
Science Advances – long-term deep sea mining research
https://pmc.ncbi.nlm.nih.gov/articles/PMC7190355/pdf/aaz5922.pdf
Nature – Long-term impact and biological recovery in a deep sea mining track
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