The Dardanelles Strait, which connects the Marmara and Aegean Seas, is the Turkish Inland Sea and is part of the famous Turkish Straits, which is often referred to as the Turkish Straits as the Marmara Sea and Bosphorus Straits. We took a cruise through the Strait to enter Ankara, Turkey, inland, the Strait is very beautiful scenery, the sea is blue and clear, both sides of the Strait are standing on many famous castles. There are many fish in the sea that swim between the Black Sea and the Aegean Sea. In 480 BC, King Xerxes I of Persia crossed the gorge by boat, and King Alexander the Great of Macedonia made a voyage to Persia in 334 BC, and crossed the strait. The Dardanelles Strait, which is the gateway to Istanbul and the Black Sea via the Mediterranean Sea, has always had a strategic and economic status and has important international political significance.