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
UNESCO Convention on the Protection of the Underwater Cultural Heritage Sea. Under the orders of King Gustavus II Adolphus, the immense vessel was built to support Swedish military campaigns during the Thirty Years' War, yet was toppled by swift winds at sea. The Vasa remained peacefully underwater until a team of archaeologists raised the wreck in 1961. Fortunately, the wreck and all of its belongings were salvaged, despite its lengthily time spent on the ocean floor. Today, the Swedish "Vasa" museum in Stockholm is an emblem of cultural heritage, dedicated to educating public citizens worldwide. In 1985, two scientists discovered the "RMS" Titanic in the northern waters of the Atlantic