Victor Vescovo and his team hunt for the Atlantic Ocean's deepest point off the island of Puerto Rico, where they discover fascinating new species.
Victor and his crew brave the freezing waters of the most challenging ocean on Earth, the Southern Ocean, in search of its deepest point.
Victor and the team head to the warmest ocean on Earth, the Indian Ocean, home to a deep trench that's a trigger zone for deadly tsunamis.
The team take on the deepest dive on Earth: the Mariana trench in the Pacific Ocean. They make remarkable discoveries in its depths.
The final leg of the team's historic mission takes them into the world's coldest ocean: the Arctic. There they explore a giant underwater mountain.