The real-life adventure will see Cameron travel 11 kilometres below the ocean's surface, where he will collect research samples for marine biology and geology.
"Well you know Jacques Cousteau used to say, 'If we knew what was there, we wouldn't have to go.' So we have to go because we don't know what's there," Cameron said. "We have a general idea, we know that we're going to see very strange animals like anthropods and holothurians and other kinds of invertebrate, but science can't answer one very basic question. Are there fish? We don't know."