A sub was sent to sea to study the remnants of the Titanic, It was lost for about 2 or 3 hours. The sub was down there for at least a day or 2 until it met it's brutal demise from implosion. All crew members were killed in the incident.
implode , gone reduced to atoms than explode , bc they had no air left , it was like a plastic bottle when you drink the water and dont let air from outside enter , it compressed