the gulf is limited by an imaginary line connecting the punta tagliamento on the italian and savudrija ("punta salvore") on the croatian coast. its area is approximately , its average depth is , and its maximum depth is . with the exception of flat islets blocking the entrance to marano-grado lagoon, there are no islands in the gulf. its eastern coasts, with trieste and the slovenian littoral, have more rugged relief.