Which documentary  was directed in part by James Cameron, Aliens of the Deep or Earth?
Earth (2007 film) Earth is a 2007 nature documentary film which depicts the diversity of wild habitats and creatures across the planet. The film begins in the Arctic in January of one year and moves southward, concluding in Antarctica in the December of the same year. Along the way, it features the journeys made by three particular species—the polar bear, African bush elephant and humpback whale—to highlight the threats to their survival in the face of rapid environmental change. A companion piece to the 2006 BBC/Discovery television series "Planet Earth", the film uses many of the same sequences, though most are edited differently, and features previously unseen footage.
9 North 9 North, or Nine North, is a region of hydrothermal vents on the East Pacific Rise in the Pacific Ocean, 900 kilometers off the coast of Acapulco, Mexico; it has been so named by scientists because its latitude is 9°50' N. It was first seen to erupt in 1991 by the deep submersible "Alvin" during a survey for the Ocean Drilling Program. In November 1999, scientists, students, education specialists, and film crews returned to 9 North to see how the biology and landscape had changed over time. IMAX, National Geographic, and BBC film crews have made videos about the vents at 9 North, most noticeably "Volcanoes of the Deep Sea".