What is the significance of the Dardanelles, the bosporus, and the sea of marmara

The waters are rich in various species of fish migrating via the Bosphorus Strait, Marmara Sea, and Dardanelles from the Black and Egean seas. There is an significant location in history in the Dardanelles. Like the Hellespont, it was the scene of Hero and Leander's Greek legend.

The waters are rich in various kinds of fish that migrate between the Black and Aegean seas via the Bosporus strait, the Sea of Marmara, and the Dardanelles. The Dardanelles holds a significant place in history. As the Hellespont, it was the scene of the Greek legend of the two lovers Hero and Leander