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
Heart of the Ocean Heart of the Ocean The Heart of the Ocean is the name of a fictional blue diamond featured prominently in the 1997 film "Titanic". In the story, the 56 carat diamond was originally owned by Louis XVI and cut into a heart shape after the French Revolution. In the film the necklace was purchased by Pittsburgh steel tycoon Caledon Hockley, played by Billy Zane, a week before he sailed on the ill-fated ocean liner " RMS Titanic". The necklace was meant to be given as an engagement present to his fiancée Rose DeWitt Bukater, played by Kate Winslet and Gloria