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
Wreck of the RMS Titanic raise a section of "Titanic" itself, a section of the outer hull that originally comprised part of the wall of two First Class cabins on C Deck, extending down to D Deck. It weighed 20 tons, measured and had four portholes in it, three of which still had glass in them. The section had come loose either during the sinking or as a result of the impact with the sea bed. Its recovery using diesel-filled floatation bags was turned into something of an entertainment event with two cruise ships accompanying the expedition to the wreck site. Passengers were offered the