Natura 2000 protects 27,312 sites with terrestrial area 787,606 km2 (around 18 percent of land of the EU countries) and marine area 360,350 km2 in 2017, and is considered almost complete in the EU terrestrial environment. The process of designation has not always been smooth as the infringement procedures against member states show. While designation of sites may be near complete, the management and enforcement of protection on sites is less advanced and many sites lack management plans. Natura 2000 faced criticism from developers, farmers and politicians who fear that the conservation of habitats and species places a brake on development.