In the east, the Dardanelles connect the Mediterranean Sea with the Sea of Marmara, then through the Bosporus Strait with the Dead Sea, then through the Suez Canal with the Red Sea and further with the Indian Ocean.

The Dardanelles are located between the Balkan Peninsula and Asia Minor and connect the Aegean Sea with the Sea of Marmara. They are 61 km long and 1.3-18.5 km wide. In ancient times Dardanelles were known as the Hellespont.