Use submarine fiber optic cables to detect seismic events and other natural phenomena in the Mediterranean. This is the goal of a protocol signed by Sparkle, the first international service operator in Italy and among the first in the world, with the National Institute of Geophysics and Volcanology (INGV). Through the use of fiber sensing techniques, it is in fact possible to detect the mechanical vibrations induced on the optical fibers of submarine cables by earthquakes, volcanic eruptions and tidal waves in real time and in a difficult-to-access environment such as the seabed. Activities conducted so far have employed Sparkle's "Mednautilus" cable system, which stretches from Sicily along the eastern Mediterranean for a total length of 11,000 km, over a seabed depth of up to 4,000 m. Due to its ring configuration, Mednautilus may in the future also offer the possibility of mapping submarine movements at multiple locations in the basin and thus more accurately locate the epicenter of marine earthquakes.