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Victor and the team explore the Indian Ocean's deepest point. They seek evidence on the volatile sea floor of what produced five of history's deadliest tsunamis.
Explorer Victor Vescovo and his crew brave the freezing waters of the most challenging ocean on earth, the Southern Ocean, in search of its deepest point.
The team face the ultimate challenge with the deepest dive on earth: the Mariana trench in the Pacific Ocean. They make remarkable discoveries in its depths.