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
Mid-Atlantic Regional Council on the Ocean (MARCO) Mid-Atlantic Regional Council on the Ocean (MARCO) Mid-Atlantic Regional Council on the Ocean is a regional initiative by states in the Mid-Atlantic States region "to maintain and improve the health of our ocean and coastal resources, and ensure that they continue to contribute to the high quality of life and economic vitality of our region’s communities well into the future." Five states currently participate in the initiative. In 2009 Governors David Paterson, Martin O'Malley, Jon Corzine, Jack Markell, and Tim Kaine joined to form the Mid-Atlantic Regional Council on the Ocean. The initiative was announced on June 4, 2009 by