The Dardanelles formerly known as the Hellespont
(Greek: , Hellespontos (ˈhɛlɨspɒnt), literally "Sea of Helle

Helle (mythology)

Helle was a character in Greek mythology who figured prominently in the story of Jason and the Argonauts. Phrixus, son of Athamas and Nephele, along with his twin sister, Helle, were hated by their stepmother, Ino. Ino hatched a devious plot to get rid of the twins, roasting all the town's crop...

"), is a narrow strait

Strait

A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not...

 in northwestern Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

 connecting the Aegean Sea

Aegean Sea

The Aegean Sea[p] is an elongated embayment of the Mediterranean Sea located between the southern Balkan and Anatolian peninsulas, i.e., between the mainlands of Greece and Turkey. In the north, it is connected to the Marmara Sea and Black Sea by the Dardanelles and Bosporus...

 to the Sea of Marmara

Sea of Marmara

The Sea of Marmara , also known as the Sea of Marmora or the Marmara Sea, and in the context of classical antiquity as the Propontis , is the inland sea that connects the Black Sea to the Aegean Sea, thus separating Turkey's Asian and European parts. The Bosphorus strait connects it to the Black...

. It is one of the Turkish Straits

Turkish Straits

The term Turkish Straits refers to the two narrow straits in northwestern Turkey, the Bosphorus and the Dardanelles, that connect the Sea of Marmara with the Black Sea on one side and the Aegean arm of the Mediterranean Sea on the other. They are conventionally considered the boundary between the...

, along with its counterpart the Bosphorus. It is located at approximately 40°13′N 26°26′E. The strait is 61 kilometres (38 mi) long but only 1.2 to 6 kilometres (0.75 to 3.7 mi) wide, averaging 55 metres (180 ft) deep with a maximum depth of 82 metres (300 ft).