For over a century, the stories and wrecks of HMS Hampshire and HMS Vanguard continue to be shrouded in mystery; now, two research teams are granted special access to investigate and uncover what happened to these WWI warships in their final moments.
As shipwrecks of World War II continue to erode in the sea, their toxic cargoes continue to pose a catastrophic threat; now, experts use cutting-edge tech to investigate and reveal the potential impact of these noxious underwater dangers.