Sea of Marmara about 22 parts per thousand, which is slightly greater than that of the Black Sea, but only about two-thirds that of most oceans. The water is much more saline at the sea bottom, averaging salinities of around 38 parts per thousand, similar to that of the Mediterranean Sea. This high-density saline water, like that of the Black Sea, does not migrate to the surface. Water from the Susurluk, Biga (Granicus) and Gonen Rivers also reduces the salinity of the sea, though with less influence than on the Black Sea. With little land in Thrace draining southward, almost all of these
Gulf of La Spezia Gulf of La Spezia The Gulf of La Spezia (Italian: "Golfo della Spezia" or "Golfo dei poeti") is a body of water on the north-western coast of Italy and part of the northern Tyrrhenian Sea, specifically of Ligurian Sea. It measures some 4.5 (length) by 3-3.5 (width) kilometers. The gulf is named for the Italian city of La Spezia, located at its middle point, which is also the main military and cargo port in the gulf, including several arsenals of the Italian Marina Militare. At the gulf extremities are the two tourist resorts of Lerici (western) and Porto Venere (eastern).