The Réserve naturelle nationale de la mare de Vauville is a national nature reserve located in the Normandy region of northern France. The reserve covers an area of about 85 hectares and includes a large area of lagoon, marsh and wet meadow.The Mare de Vauville area was declared a national nature reserve in 1980, with the aim of preserving and protecting the biodiversity of the area, which is home to numerous species of waterfowl and rare plants.The mare de Vauville lagoon is of natural origin and was formed about 6,000 years ago. The wetland surrounding it is an important habitat for numerous bird species, including the black stork, bittern and marsh harrier.The reserve is also home to numerous rare and protected plant species, such as the water buttercup and the yellow marsh lily. Because of its naturalistic richness, the reserve is an important destination for birdwatchers and anyone who enjoys nature and outdoor activities.The Réserve naturelle nationale de la mare de Vauville is open to the public and offers numerous walking and biking trails to explore the area and discover its fauna and flora. The reserve also organizes guided tours and educational activities for visitors of all ages, with the aim of raising awareness of the importance of nature conservation and biodiversity.