Deep sea robots will let us find millions of shipwrecks, says man who discovered Titanic

A revolutionary new class of amphibious vehicle will transform the search for lost vessels on the ocean floor, says marine archaeologist Dr Robert Ballard

He is the celebrated deep-sea explorer who discovered the Titanic, as well as the German battleship Bismarck and other historic sunken vessels around the world.

Now Dr Robert Ballard is pioneering cutting-edge technology - autonomous underwater vehicles that will revolutionise" the search for more than three million shipwrecks that lie scattered across ocean floors, according to a Unesco estimate. Many will offer new insights into life on board at the time of sinking, hundreds or even thousands of years ago.