Researchers warn that half the world’s beaches could disappear in the near future — coastal erosion and rising sea levels, accelerated by climate change and human development, are undermining natural beach regeneration

Researchers are sounding the alarm that nearly half of the world’s beaches could disappear in the coming decades, as accelerating coastal erosion and rising sea levels undermine natural shoreline regeneration. Beaches — essential buffers against storms, habitats for wildlife, and economic drivers for coastal communities — are facing unprecedented pressure from both climate change and human development.

According to scientists, intensifying storm activity, glacier melt, and thermal expansion of oceans are raising sea levels faster than many coastlines can adapt. At the same time, widespread construction, sand mining, and poorly planned tourism infrastructure are disrupting the natural flow of sediments that replenish beaches. Without these sediments, coastlines lose their ability to rebuild after storms, leading to rapid retreat.

Regions with low-lying coasts, including parts of Asia, Africa, and small island nations, are considered most at risk. Some iconic tourist destinations may see dramatic losses within the century if current trends continue. Researchers warn that beach disappearance will have far-reaching consequences — from increased flooding and habitat loss to major economic setbacks for countries dependent on coastal tourism.

Experts emphasize the need for urgent adaptation measures, including managed retreat, dune restoration, and stricter coastal development regulations, to preserve the world’s remaining beaches for future generations.