In the Black Sea Region, there was the city of Olbia is an archaeological site of an ancient Greek city on the shore of Ukraine. The bronze dolphin coinages of ancient Olbia are one of the most fascinating bronze coinages of the Black Sea area. They are absolutely unique in both shape and format. The Olbians adopted a casting method like the ancient Romans of this period. They created these dolphin-shaped coins for some reason rather than the traditional round coinage of their neighbors and indeed the entire Greek world. Their inspiration no doubt was that a very large population of bottle-nose dolphins have existed in the Black Sea.