Bordered by Croatia and Montenegro at the coast, its coastal area is 24 km long, with a jagged coastline at Neum Bay and Klek Peninsula. Bosnia and Herzegovina has a population of about 3.5 million people, of which about 500,000 live in the Adriatic Sea discharge basin. The coastal region belongs to the Herzegovina-Neretva Canton, encompassing an area of 3,318 km2 and nine municipalities.