Hualpén displays a great ecological potential, based on an important biodiversity of species present in the natural systems of the commune, such as; native forest, humedales, salt marshes and a small rich coastal edge rich in marine resources. Therefore this fact constitutes a natural and genetic reserve of invaluable wealth. The salt marsh of Lenga, presented only in few parts in the planet and only in four points of Chile , is a clear example of the wealth of the natural ecosystems of the commune.