Attempt to reduce CO₂ in the ocean by enhancing the carbon fixation capacity of marine organisms

【Biological conversion technology to reduce CO₂ dissolved in the ocean】
Algae are the primary agents for CO₂ absorption and fixation in the oceans, and they also serve as a feed for fish and shellfish in the food chain.
Therefore, CO₂-derived carbon fixed by algae is transferred to and fixed in fish and shellfish.
Our goal is to reduce CO₂ by focusing on the marine food chain.
Using land-based aquaculture, we are engaged in research to maximize carbon fixation in the entire food chain by improving both the CO₂ absorption capacity of algae and the growth of fish and shellfish through genome editing.
In 2023, NTT succeeded in identifying geneｓ that could dramatically increase the CO₂ absorption capacity of algae. Based on this finding, there are high expectations that we can reduce CO₂ dissolved in the oceans by breeding algae with high CO₂ absorption capacity.
With the aim of establishing a new technology that provides optimal growth of algae in any environment, we began field tests.
If our research succeeds in significantly increasing carbon fixation of algae, fish, and shellfish, we can reduce atmospheric CO₂ that is one of the main factors of global warming. The problems that this technology can solve are not limited to environmental issues. This technology can also contribute to solving food shortage problems through the production of fish and shellfish that feed on algae.
◆Biological CO₂ conversion technology
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