A global map of seagrass ecosystems

A comprehensive global map of seagrass meadows was released on June 24, 2026, utilizing a combination of satellite imagery and machine learning techniques. This marks the first such detailed mapping effort for these vital underwater ecosystems. The project, published in Nature, aims to significantly enhance conservation strategies for seagrass, which play a critical role in marine biodiversity and carbon sequestration. Researchers integrated data from multiple satellite sources, including those from the European Space Agency's Copernicus program, to identify and delineate seagrass habitats across the world's coastlines. Machine learning algorithms were trained on extensive ground-truth data to accurately classify seagrass presence and extent, overcoming previous limitations of remote sensing in distinguishing seagrass from other marine vegetation. The resulting map provides an unprecedented baseline for monitoring changes in seagrass cover due to climate change, pollution, and coastal development. Scientists involved in the project highlighted that this detailed spatial information is essential for prioritizing conservation efforts and informing policy decisions aimed at protecting these vulnerable habitats. The initiative is expected to facilitate more targeted restoration projects and improve the accuracy of global carbon budget assessments, as seagrass meadows are significant carbon sinks.