The entire northern coastline of Turkey sits along which body of water?

Turkey is a transcontinental country located mainly on the Anatolian peninsula in Western Asia, with a smaller portion on the Balkan peninsula in Southeastern Europe. East Thrace, the part of Turkey in Europe, is separated from Anatolia by the Sea of Marmara, the Bosporus and the Dardanelles (collectively called the Turkish Straits). Istanbul, which straddles Europe and Asia, is the largest city in the country, while Ankara is the capital. Turkey is bordered on its northwest by Greece and Bulgaria; north by the Black Sea; northeast by Georgia; east by Armenia, the Azerbaijani exclave of Nakhchivan and Iran; southeast by Iraq; south by Syria and the Mediterranean Sea; and west by the Aegean Sea.

The Black Sea is a body of water and marginal sea of the Atlantic Ocean between Eastern Europe, the Caucasus, and Western Asia. It is supplied by a number of major rivers, including the Danube, Dnieper, Southern Bug, Dniester, Don, and the Rioni. The watersheds of many countries drain into the Black Sea beyond the six that immediately border it.

The Black Sea is bordered by Ukraine, Romania, Bulgaria, Georgia, Russia and along the northern coastline of Turkey.