Marismas del Odiel Biosphere Reserve (Spain)

Designated in 1983, this biosphere reserve is located in the Gulf of Cadiz, in the southwestern part of the Iberian Peninsula. With this extension, the surface area of the site is enlarged from 7,158 ha to 18,875 ha, with a population of 33,700. The biosphere reserve occupies the mouth of the Odiel River, in the province of Huelva, as well as a coastal fringe.