Salt marshes are important ecosystems that protect coastlines. A study used a model to understand how water affects salt marshes and how artificial structures can help restore them. The research found that coastal dynamics strongly impact salt marsh vegetation. Building submerged dikes can help restore salt marshes by reducing water flow. Over time, salt marshes can change in height and shape, creating a unique landscape. This study provides valuable information for managing and restoring coastal salt marshes to prevent disasters.