Oxygen on Titan is now feared to have run out - but the desperate search for the missing Titanic submersible and the brave adventurers on board reached the floor of the Atlantic today - just as the desperate deadline passed.
The world is now praying for a 'miracle' after the US Coast Guard predicted the vital oxygen supply would end at 12.08pm GMT (7.08am EST and 9.08pm Sydney). Banging has been heard at 30 minute intervals from the depths of the Atlantic - possibly from the men striking the side of the sub - but it has not yet been located.
Those stuck onboard include British billionaire Hamish Harding, OceanGate CEO Stockton Rush, French navy veteran PH Nargeolet and Pakistani businessman Shahzada Dawood and his son Suleman, who is just 19 and a student at Strathclyde University.
The US Coast Guard has said that the rescue operation is 'still in an active search' with no plans yet to shift to a recovery phase as the desperate families of the so-called 'Titan Five' wait for news. Rear Admiral John Mauger said it was a 'complex case' and rescuers were also accounting for 'the people's will to live'.
A deep water robot sub has reached the Atlantic floor - and another is descending the 12,500ft of ocean fast. 'The Canadian vessel Horizon Arctic has deployed an ROV that has reached the sea floor and began its search for the missing sub', a spokesman said.