Gulf of Trieste 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 Slovenian sea is part of the Gulf of Trieste. The gulf is limited by an imaginary line connecting the Punta Tagliamento on the Italian and Savudrija ("Punta Salvore") on the
Gulf of Aqaba over Greater Syria. The Marine Twilight Zone Research and Exploration program (MTRX) was set up in 2003 by the Interuniversity Institute for Marine Sciences of Eilat to conduct research on the deep coral reef systems of the northern Red Sea. The gulf is one of the most popular diving destinations in the world. About 250,000 dives are performed annually in Eilat's 11 km coastline, and diving represents 10% of the tourism income of this area. The Landscape of Wadi Rum to the east of the northern edge of the gulf is a popular destination. Other destinations are the ruins of