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 and salinity levels to the point that organisms would not be able to gain a foothold on the wreck. "Titanic" would effectively be in a deep freeze. The reality has turned out to be very different, and the ship has increasingly deteriorated since she sank in April 1912. Her gradual decay is due to a number of different processes – physical, chemical and biological. She is situated on an undulating, gently sloping area of seabed in Titanic Canyon which is swept by the Western Boundary Current. Eddies from the current flow constantly across the wreck, scouring the sea bed and