Mashable: Suleman was a bright and ambitious young man who had just finished his first year at the University of Strathclyde in Scotland, where he studied business.

Suleman Dawood had a unique goal: to solve a Rubik’s Cube at the bottom of the ocean, near the Titanic. The 19-year-old British-Pakistani student had brought his colorful puzzle with him on a submersible dive to the shipwreck site, along with his father, who planned to film the record-breaking attempt.

But their adventure turned into a nightmare when the submersible suffered a “catastrophic implosion” and lost contact with the surface. All five people on board, including Suleman and his father, Shahzada Dawood, were declared dead.

Suleman’s mother, Christine Dawood, and his 17-year-old sister were waiting on the Polar Prince, the support vessel for the dive, when they received the devastating news. Christine told the BBC that her son was excited about his Rubik’s Cube challenge. “He said, ‘I’m going to solve the Rubik’s Cube 3,700 metres below sea at the Titanic’,” she said.

Suleman was a bright and ambitious young man who had just finished his first year at the University of Strathclyde in Scotland, where he studied business. His father was a prominent businessman and philanthropist in Pakistan, who was the vice chairman of Engro Corporation, a large conglomerate. His grandfather, Hussain Dawood, is the chairman of Dawood Hercules Corporation, another major business entity in Pakistan.

The Dawood family had been spending a month in Canada before embarking on the dive, which was supposed to be a Father’s Day bonding experience. Suleman’s aunt, Azmeh Dawood, told Sky News that her nephew was initially reluctant to go on the dive, but agreed to do it for his father.

The OceanGate submersible was exploring the Titanic shipwreck in the mid-Atlantic when it went silent last Sunday. A massive search operation was launched to find the vessel and its occupants, but no signs of life were detected.

The tragedy has shocked and saddened many people who knew and admired Suleman and his father.