September 16, 2001
Segments include the Bermuda Triangle; oil-rig accidents; and chemicals on the sea floor.
August 30, 2001
Scientists travel to the ocean floor in submersibles to observe earthquakes, volcanoes and strange creatures of the abyssal sea. Also: how a huge flood 13,000 years ago changed Earth's climate.
July 27, 2001
Included: deep-sea research that reveals unusual creatures from the abyssal depths; scientists discover how whales can communicate over hundreds of miles. Also: a dolphin's sonar system is examined.
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