The Mariana Trench cuts a 1,500-mile incision in the bottom of the Pacific Ocean near the island of Guam. That's where an international team of scientists has just spent over a month sending probes down to the deepest place on Earth.
The scientists were stunned by the amount of life they found there, including a fish species inhabiting the deepest depths.
The bottom of the trench lies 7 miles below the ocean's surface. It's a place of perpetual darkness and freezing cold. To explore it, scientists aboard the research vessel Falkor dropped "landers" over the side. Each one is about the size of a large refrigerator and bristles with instruments and cameras...