A five-person submersible vessel taking tourists on a $250,000 trip to see the wreckage from the 1912 Titanic disaster 12,500 feet (3,800m) undersea is missing in the Atlantic off Canada.
WHO IS ON BOARD? The five people on board are:
Hamish Harding, a 58-year-old British businessman and explorer
Paul-Henry Nargeolet, a 77-year-old French explorer nicknamed "Mr Titanic"
Stockton Rush, 61, is the chief executive of OceanGate, the firm behind the diveR.
Shahzada Dawood, 48-also a British businessman -and his son, Suleman Dawood, 19