Danube Delta is the only danube in the world declared natural reservation, its universal value being recognised by the fact that it has been included in the international network of biosphere reservations. It comprises of 580000 ha, being situated on the
The Danube Delta is perhaps the least inhabited region of temperate Europe. In the Romanian side live about people, of which in the port of Sulina, which gives an average density of approx. 2 inhabitants per km².