A bit of history to understand nature, its specificities and the need to preserve it...
At the base of the cord, and even more so since the construction of the slipway for the fishermen, sand accumulates on the foreshore. In this sector which is not eroded by the sea, marram grass has colonized the dune in dense clumps.
A little further to the west, riprap was made over almost a kilometer. For a long time various works had tried in vain to stop the erosion.
The dune, a fragile space
Just after the riprap, the dune still has a fragile aspect. Despite light protection, the dune continues its retreat. It forms an abrupt front, in more or less collapsed cliff, which means that erosion predominates over accumulation.
As one advances towards the west, the front softens and the dune, protected by a border of vegetation, connects seamlessly with the beach. In this sector, the dune is stable.
That doesn't mean it doesn't move, but that its profile stays balanced because the cord keeps moving. It lengthened (by about 100 meters between 1952 and 1963), decreasing the width of the gully, it thinned out and actually retreated.
Among the plant species present on this coastal spit, there are laguria, some sand poppies and sea cabbage.
The three hooks of sand located on the north side of the cord are the witnesses of the progressive construction of this long dune which currently stretches over almost 4 km. They are formed thanks to the swell which bypasses the end of the cord and they therefore mark the different stages of the formation of this spit.