Gulf of Trieste features are: The entire Slovenian coastline is located on the Gulf of Trieste. Its length is . Towns along the coastline include (from east to west) Koper, Izola, and Piran. Gulf of Trieste The Gulf of Trieste (, , , ) is a very shallow bay of the Adriatic Sea, in the extreme northern part of the Adriatic Sea. It is part of the Gulf of Venice and is shared by Italy, Slovenia and Croatia. It is closed to the south by the peninsula of Istria, the largest peninsula in the Adriatic Sea, shared between Croatia and Slovenia. The entire
Periplus of the Erythraean Sea believed to be the location of the ancient trade center of Opone. Ancient Egyptian, Roman and Persian Gulf pottery has been recovered from the site by an archaeological team from the University of Michigan. Opone is in the thirteenth entry of the "Periplus of the Erythraean Sea", which in part states: In ancient times, Opone operated as a port of call for merchants from Phoenicia, Egypt, Greece, Persia, Yemen, Nabataea, Azania, the Roman Empire and elsewhere, as it possessed a strategic location along the coastal route from Azania to the Red Sea. Merchants from as far afield as Indonesia and