It covered 47 per cent of the mainland area and 39 per cent of the marine area. The network included 1,510 important sites for species and habitat types, 40 areas of importance for birds, and 2 ecological corridors (migration corridors for birds and marine turtles). Croatia established its Emerald Network sites first, and subsequently these are included in the proposal for Natura 2000 sites. The final list contains over 700 proposed sites of community importance (of which 174 are caves) and 38 special protected areas (SPAs). Together, they cover over one third of the country and around one sixth of the territorial sea, putting Croatia at the top of the league table along w ith Slovenia and Bulgaria in terms of percentage of territory included in Natura 2000.