An expedition surveying the wreck of the Titanic is showing off some crisp images of the world's most famous shipwreck, but officials said Sunday they are headed back to shore. Officials from Expedition Titanic said in a statement they are now headed back to Newfoundland because high seas and winds brought on by hurricane Danielle are preventing researchers from carrying out their work.The team of scientists have been using a pair of robots to take thousands of photographs and hours of video of the wreck, which lies roughly 2.5 miles (4 kilometers) below the surface.