The tethered robot also carried a recording equipment to record any sound of water in the Reactor 3 Torus Room, but the equipment was stand-alone.
Since the cable was apparently damaged and the robot became inoperable, there is no way for now to retrieve any audio recording it did. The radiation levels inside the Torus Room is too high for human co-workers (100 to 360 millisieverts/hour), as you see below in TEPCO's handout for the press (7/12/2012):
According to the handout, the survey was about three-quarters done. The workers and the robot spent about 3 hours on the work, when the cable communication to the robot was interrupted. 6 TEPCO employees who had been scheduled for 8 millisieverts radiation exposure for their work of carrying the robot through the narrow passage in the basement and holding the Torus Room door open actually got 5.32 millisieverts.
The photographs and video released show no major damage inside the Torus Room. The stairway in the southwest corner shows damage. (The photographs and the video can be downloaded at TEPCO's site, here.)
Video by Survey Runner: