Since the 1950s, the coastline of La Réunion, a French island in the Indian Ocean, has been gradually retreating, with some areas losing between 15 and 200 meters of land. This erosion has had significant impacts on local communities, especially in the western part of the island, where some homes now have their foundations partially submerged. Roads, utilities, and other critical infrastructure are increasingly at risk as the land continues to disappear. The retreat of the coastline is attributed to a combination of natural processes and human activity, including rising sea levels, coastal erosion, and changes in sediment flow. These factors have accelerated in recent decades, prompting local authorities to take action to protect vulnerable areas and residents. In the village of l'Hermitage, the Saint-Paul municipal administration is implementing a strategy focused on restoring the natural dune system, which acts as a barrier against coastal erosion. The plan involves planting endemic plant species—those native to the region—that are well-suited to the local environment and can help stabilize the soil and dunes. This initiative is part of a broader effort to adapt to the ongoing changes in the coastline. While these measures may not completely stop the erosion, they aim to slow its effects and protect both natural habitats and human settlements. The work in l'Hermitage serves as a model for other areas facing similar challenges, highlighting the importance of ecological restoration in coastal management.