Yes, the Ligurian Sea is an integral arm of the Mediterranean Sea, located in the northwestern portion of the basin. It is bordered by the Italian Riviera (the region of Liguria) to the north, the French island of Corsica to the south, and the Tuscan archipelago to the east. It connects directly to the Tyrrhenian Sea to the southeast and the main body of the Western Mediterranean to the west. This sea is famous for its deep waters—reaching depths of over 2,800 meters—and its role as a vital habitat for marine life; a large portion of it is protected within the Pelagos Sanctuary for Mediterranean Marine Mammals. While it is a distinct geographical entity with its own unique currents and ecology, it is universally classified as a sub-basin of the Mediterranean. It serves as a major maritime corridor for the port of Genoa, one of Italy's most important shipping hubs, and is world-renowned for the scenic "Cinque Terre" coastline that overlooks its vibrant blue waters.