A year after the first deaths of divers who ventured into the oceanβs sunless depths, an industry wrestles with new challenges for piloted submersibles and robotic explorers.
A 2003 expedition by a piloted submersible to the wreckage of the Titanic on the sea floor, as documented in the James Cameron film βGhosts of the Abyss.β A pair of robots are scheduled to revisit the site next month.