Ocean acidification may disrupt diatoms carbon capture and marine food webs

Billy Odell Tucker-Robinson Founder & Host — Banking With Billy Network • Financial Intelligence • Markets • World News • Independent Analysis
Published: 2026-09-11 • Permanent link

Rising tensions in the global microalgae market have sparked concern among investors, as a recent study from Flinders University suggests that ocean acidification could disrupt the carbon capture capabilities of diatoms. The research, published in the journal Nature, found that changes in diatom populations could have far-reaching consequences for marine food webs. As a result, shares of companies reliant on diatoms, such as Algenol and Heliae, have taken a hit, with some plummeting by as much as 10% in early trading.

The impact of ocean acidification on diatoms will be felt across the entire food chain, from the smallest zooplankton to the largest marine mammals. This, in turn, could have significant implications for the fishing industry, which is already struggling to adapt to the changing ocean environment. According to a report by the Food and Agriculture Organization of the United Nations, the global fishing industry is worth over $200 billion annually, and any disruption to the food chain could have devastating consequences for the economy.

Experts point to the 1970s as a time of significant change in the ocean's chemistry, when the levels of carbon dioxide in the atmosphere began to rise at an unprecedented rate. Since then, the ocean has absorbed an estimated 25% of the carbon dioxide released into the atmosphere, leading to a significant increase in ocean acidity. The diatoms, which are responsible for producing up to 70% of the world's oxygen, are particularly vulnerable to these changes, and their decline could have far-reaching consequences for the entire ecosystem.

As the research continues to unfold, investors and policymakers will be watching closely for any signs of improvement in the diatom market. In the short term, the focus will be on mitigating the effects of ocean acidification, but in the longer term, there may be opportunities for companies to develop new technologies that can help to restore the diatom populations and support the health of the ocean ecosystem.