Project in brief The Mediterranean Basin is one of the 25 hotspots and one of the 200 ecological regions with the highest biodiversity in the world. Although covering only 0.8% of the world’s sea surface and 0.3% of its volume, it is home to 7 to 8% of all known marine species. Similar diversity is known for terrestrial plant life. At the same time, the Mediterranean Sea is one of the world’s busi ...