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 to respond was SS "Mount Temple", which set a course and headed for "Titanic"'s position but was stopped en-route by pack ice. Much nearer was , which had warned "Titanic" of ice a few hours earlier. Apprehensive at his ship being caught in a large field of drift ice, "Californian"s captain, Stanley Lord, had decided at about 22:00 to halt for the night and wait for daylight to find a way through the ice field. At 23:30, 10 minutes before "Titanic" hit the iceberg, "Californian"s sole radio operator, Cyril Evans, shut his set down for the night and went to