Follow along for live updates on the submersible that vanished while taking five people down to the wreck of the Titanic. ____ ‘DESPERATE SITUATION:’ SCIENTISTS, WHILE REALISTIC ABOUT SURVIVAL CHANCES, OFFER HOPE Scientists, while remaining realistic about the chances of finding the Titan on the vast ocean floor, are still offering a glimmer of hope. Rob Larter, a marine geophysicist with the British Antarctic Survey, said in London on Thursday that it’s incredibly difficult to find an object the size of the Titan in a totally dark environment.