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 The Titanic Salvage Company was established to manage the scheme and a group of businessmen from West Berlin set up an entity called Titanic-Tresor to support it financially. It fell apart when its proponents found they could not overcome the problem of how the balloons would be inflated in the first place. Calculations showed that it could take ten years to generate enough gas to overcome the water pressure. A variety of audacious but equally impractical schemes were put forward during the 1970s. One proposal called for 180,000 tons of molten wax (or alternatively, Vaseline) to be pumped into "Titanic",