For a permanent installation in water up to 20 m (65.6 ft) deep and damp areas: the aramid-reinforced 110-ohm microphone cable from the AQUA MARINEX series by Sommer cable (art 200-0131AQ)
The secret weapon against cable and technology loss: connection cables from Sommer cable are now RFID-ready with integrated transponders from relyos (article suffix ‘S’, see https://www.sommercable.com/en-gb/customize-your-cable)