Video shows the moment the OceanGate Expeditions submersible began its doomed voyage to the Titanic wreck in selfie footage posted to TikTok. Abbi Jackson, a 22-year-old videographer employed by the company onboard the mothership, Polar Prince, shared the short video before the vessel disappeared. The post, captioned 'watching a submarine go down to the Titanic' pans away from the ship's deck to show Titan on the surface of the Atlantic Ocean some distance away. Miss Jackson also filmed one of the sub's passengers, Paul Henri Nargeolet, who has been dubbed 'Mr Titanic' for visiting the wreckage 37 times. The 77-year-old...