Deep-sea ASMR brought to you by a robot unspooling a cable. 〰️ MBARI's underwater hydrophone sits on the seafloor about 30 kilometers (18 miles) from shore, just west of Monterey Bay. It is attached (by this neat neon cable) to the MARS undersea cabled observatory, which carries data from the hydrophone back to shore. Although the MARS hydrophone is located on the deep seafloor, most of the sounds it picks up are from animals and activities higher up in the water or even at the sea surface. For