Episode Details

Seagrass meadows may be the most powerful climate solution underwater, and almost no one is talking about them.

Research published in Nature Climate Change shows that seagrass ecosystems store vast amounts of carbon in their sediments, sometimes for centuries. Unlike forests, much of this carbon is locked below ground in oxygen poor environments, reducing the risk of rapid release. But when seagrass meadows are degraded, that long-stored carbon can return to the atmosphere.

A study in Science Advances demonstrates that large scale seagrass restoration can significantly enhance blue carbon sequestration while rebuilding ecosystem function. At the same time, NOAA documents how seagrass supports fisheries by acting as nursery habitat for commercially important species and protecting shorelines from erosion and storm damage. The UNEP Blue Carbon report makes it clear that coastal ecosystems like seagrass are essential for both climate mitigation and adaptation, yet they remain underfunded in global policy frameworks.

If seagrass stores carbon, strengthens fisheries, and protects coastal infrastructure, why are we still underinvesting in one of the most efficient natural carbon sinks on the planet?

Seagrass Spotter: https://seagrassspotter.org/