Sam wore a blindfold while following the water trail left by a miniature submarine. The Marine Science Center explains the headphones, waiting position and stopped-motor controls in this recorded demonstration. The water-motion model is a qualitative schematic; the exact date of this trial is not reported.
Source and research:
Music: Deep Haze by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0. Excerpted and mixed.
Sam followed it blindfolded.