Both experts and the general public were speculating on a few different ways the passengers may have died. With limited oxygen, food, and other supplies, running out of resources was a real possibility. Plus, combusting, system failure, and crashing were also concerns.

However, it has now been confirmed that the submarine did implode. What exactly does that mean?

An implosion means that something collapses in on itself. In this case, the submersible would have collapsed under pressure, killing any passengers inside quickly.

“The pressure down there at 4,000 meters is pretty high. About 5,800 PSI at Titanic depth,” scientist Steve Somlyody told Fox News. “If they had any kind of leak, it would lead to an implosion and it would happen in an instant, very immediately.”

He also explained that the passengers on board wouldn't even know it was happening.