Gulf of Koper Gulf of Koper The Gulf of Koper or Koper Bay (, , ) is located in the northern part of the Adriatic Sea, and is a part of the Gulf of Trieste. The gulf, named after the city of Koper, is part of the Slovene Riviera and is entirely located in Slovenian territory. Crossed by the river Rižana, it is 18 km² large and spans from Debeli Rtič, next to the borders with the Italian town of Muggia; to Rt Madona, a cape in the town of Piran, that is also the northernmost point of the Gulf of Piran. The
Gulf of Mersin Gulf of Mersin Gulf of Mersin () is one of the widest gulfs in Turkey. It is in the northeast of the Levantine Sea between the gulfs of İskenderun and Antalya. ( The Levantine Sea is the easternmost part of the Mediterranean Sea.) The gulf of Mersin is between Taşucu in the west and Karataş in the east. The total distance between these two points is approximately 115 km. ( ≈ 71 mi or 62 nmi). The city of Mersin is roughly at the center of the coastline. The total water surface is about 2 300 km ( ≈ 888