The Titanic, the crowning achievement of ocean engineering, lies in ruins 3,800 meters deep at the bottom of the Atlantic.

Submersibles captured images of the Titanic wreck to create a "digital twin" of the ship. Researchers are using it to explore the Titanic's mysteries.

It had been five hours since my intrepid robot Gilligan left its garage on the front of the submersible Mir 1 and disappeared inside the cavernous ... the rusted ruin of Titanic’s first-class ...