The search for a missing submarine that was exploring the Titanic wreck site is becoming increasingly desperate, as the oxygen supply for the five people on board is expected to run out soon.
The Titan submersible, operated by OceanGate Expeditions, vanished on Sunday morning in the waters of Newfoundland, Canada.
The submersible, which can carry five people, was on a tourist expedition to explore the sunken ship. The fate of the passengers and crew is unknown.