The ferry boat ride to the Princess Islands from Istanbul through the Bosphorus Strait into the Sea of Marmara is a spectacular one. The sights of the Istanbul City and its major monuments from the sea and the beautiful views of the islands as you approach them is simply unforgettable. And the seagulls! They follow the ferryboats in huge droves! And the reason? Passengers of these ferries toss pieces of bread at them and enjoy watching them catch the pieces of bread mid-air.