So since I have a test on Monday I have been thinking of nothing else but this alive vs dead thread. Since CJ at the Dunbar Apartments heard Pinstripes say "Leave her" only one conclusion can be made in my opinion. Pinstripes is based on a human and the only way humans can vocalize is to move air over vocal chords. This air movement is on an exhalation phase of respiration. If the thing breathes it is alive. I think the ones underwater surface briefly to get air like any other air breathing creature that happens to be aquatic.