Of the 25 000 Natura 2000 sites, only around 1 800 are at sea: they are located in territorial waters (generally within the limit of 12 nautical miles from shore) and are often the coastal prolongation of a terrestrial site.
25 000 Natura 2000 alast asub vaid 1 800 meres – need alad asuvad territoriaalvetes (ulatudes üldjuhul kuni 12 meremiili kauguseni rannikust), tihtipeale on tegemist maismaal asuva ala pikenemisega rannajoonest kaugemale.