KM3NeT is a next-generation neutrino telescope currently being deployed on the bottom of the Mediterranean Sea, on two sites: ORCA near Toulon (France) at 2500m below the sea level, and ARCA near Capo Passero (Sicily) at 3500m into the abyss. While ORCA (Oscillation Research with Cosmics in the Abyss) is primarily dedicated to fundamental neutrino physics studies at GeV energies, ARCA’s (Astrophisics Research with Cosmics in the Abyss) main goal is high-energy (TeV-PeV) neutrino astronomy [1].