The Sea of Marmara is part of the Mediterranean Sea and lies within the borders of Turkey. The sea connects the Black sea to the Aegean Sea through respectively the Bosporus strait and the Dardanelles Strait. As such, it separates Turkey’s Asian and European Lands. The sea covers an area of around 11,350 km2 and is named after Marmara Island, known for being rich in marble. The most important city bordering the sea is Istanbul, the capital of Turkey. The sea is slightly more saline than the Black Sea but is only two-thirds as salty as the average ocean.