The Ligurian Sea is a part of the Mediterranean Sea positioned between the northwestern coast of Italy, the southeastern coast of France, and to the north of the islands of Corsica and Elba.
The western boundaries of the sea are an estimate at best, as mapping accuracy depends on where the sea actually ends, and there are many opinions for same.
The distance from Pisa to Nice is 251 km (156 mi), and from Genoa to Elba is 207 km (129 mi). The max depth is estimated at more than 2,850 m (9,300 ft.).
Called “Mar Ligure” in Italian and “Mer Ligurienne” in French, Genoa and Livorno are its chief ports and the sea is well served by regional ferries.
Sourced, The World Atlas website.