Tidal salt marsh restoration and creation are important for compensating for wetland loss and preserving coastal ecosystems. These marshes are typically found in calm coastal areas and play a crucial role in filtering nitrogen from the environment. Restored marshes have higher nitrogen inputs and lower nitrogen losses compared to natural marshes. Selecting the right location is key for the success of these projects. Various techniques have been developed and used to restore or create tidal marsh habitats, with varying levels of success observed in different locations.