![SAV growing in shallow water near Havre de Grace, MD. Credit: Will Parson/Chesapeake Bay Program](/sites/default/files/styles/wide/public/articles/2023/Figure-2-Global-long-term-observations-of-coastal-erosion-and-accretion-landscape.jpg?itok=WuPD6JDl)
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Changes in coastal morphology have broad consequences for the sustainability of coastal communities, structures and ecosystems. Although coasts are monitored locally in many places, understanding long-term changes at a global scale remains a challenge. Here we present a global and consistent evaluation of coastal morphodynamics over 32 years (1984-2015) based on satellite observations.