The Natura 2000 network in Spain has over 1500 protected sites (Mostly withing exisiting natural and national park araes limits.) This makes it one of the largest national networks in the EU. These sites protect a wide range of habitats, including wetlands, coastal dunes, forests, grasslands, and mountain areas. Also, many species of birds, mammals, reptiles, and plants that are unique to the country or rare in Europe. The Spanish government is responsible for ensuring that these sites are effectively managed and protected, and for implementing measures to conserve the habitats and species found within them.
Further reading and information here: https://wildsideholidays.co.uk/the-natura-2000-network-in-spain/