The last text of British billionaire Hamish Harding, who is onboard the missing Titanic submersible, has been revealed.
A desperate hunt is underway to find the OceanGate submarine that went missing on a trip down to the bottom of the ocean, to see the wreckage of the Titanic.
But on its 4,000m trip down, the sub lost contact sparking fears for the safety of the five passengers on board.