Titanic sub: Suleman Dawood's father, Shahzada Dawood, had carried a camera on the Titanic sub to capture his son creating the Rubik's Cube world record under the depths of the ocean.
Suleman Dawood, the 19-year-old son of Pakistani businessman Shahzada Dawood, was terrified before the Titanic expedition which ended in tragedy.
Missing Titanic sub: The 6.5-meter submersible, named Titan, was carrying three fee-paying passengers when it vanished Sunday: British billionaire Hamish Harding, Pakistani tycoon Shahzada Dawood and Dawood's son Suleman.