Beach grass is clearly one of the most critically important dune plants. Marram grass has long roots that intertwine through all of the sand and the new sand buries on top of each other. This helps keep the sand more compacted in the dune. Marram grass "grasps" the sand a traps it in the plant this helps to form the entire dune. Marram grass thrives in a harsh, wind-blown sandy environment. Once the Marram grass has stabilized the soil, it creates an environment no longer suitable for its own species. This is the main succession concept. Marram grass creates a good enviroment for many organisms and creatures.