Despite underwater banging sounds heard earlier, titan the missing submersible still remains untraceable. Its been more than 90 hours since the sub's descent. With no progress towards its recovery, survival chances of the explorer remain bleak.

Titanic submersible out of contact for more than 80 hours, search underway

The tourist submersible that has gone missing in the North Atlantic with five people on board has less than 30 hours of air left according to official estimates.

Missing Titanic Tourist Submarine soon to run out of oxygen

tourist-sub

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