Wreck of the RMS Titanic research. The stern section, which had previously received relatively little attention from explorers, was specifically targeted for analysis. The microbial colonies aboard "Titanic" were also a key focus of investigation. The second expedition, from 27 May – 12 June 2004, saw the return of Robert Ballard to "Titanic" nearly 20 years after he discovered it. The expedition spent 11 days on the wreck, carrying out high-resolution mapping using video and stereoscopic still images. 2005 saw two expeditions to the "Titanic". James Cameron returned for the third and last time to film "Last Mysteries of the Titanic". Another expedition searched for
Sinking of the RMS Titanic that distress signals could be sent. They remained at their posts until the very end, thus ensuring that "Titanic"s electrics functioned until the final minutes of the sinking. None of the ship's 35 engineers and electricians survived. Neither did any of the "Titanic"s five postal clerks, who were last seen struggling to save the mail bags they had rescued from the flooded mail room. They were caught by the rising water somewhere on D deck. Many of the third-class passengers were also confronted with the sight of water pouring into their quarters on E, F and G decks. Carl Jansson,