Which documentary  was directed in part by James Cameron, Aliens of the Deep or Earth?
Aliens of the Deep Aliens of the Deep is a 2005 documentary film, directed in part by James Cameron alongside fellow cameraman and friend Steven Quale, who would go on to direct "Final Destination 5" six years later, and filmed in the IMAX 3D format. It was produced by Walden Media and Walt Disney Pictures. Cameron teams with NASA scientists to explore the Mid-Ocean Ridges, submerged chains of mountains in the Atlantic and Pacific oceans that are home to some of the planet's more unusual forms of life.
What on Earth! What on Earth! (French: "La Terre est habitée!") is a 1966 National Film Board of Canada animated short co-directed by Les Drew and Kaj Pindal. The film is a mockumentary, introduced in its opening credits as produced by the "National Film Board of Mars" that takes a humorous look at car culture from the point of view of fictional Martians, who mistake automobiles for Earth's true inhabitants and people as their parasites. It attempts to examine the sociology of the automobile as the dominant species on earth, and makes wild guesses about the lifestyle, feeding habits, mating habits and funeral rites of this "species."