In a crazy promotional stunt to promote the movie Sanctum, Virgin Mobile Live conducted a live Question and Answer session with producer James Cameron, while he was underwater. iJustine interviewed Cameron at the Aquarium of the Pacific in Long Beach, CA. Cameron was mic’d underwater with a diving suit. You can watch three promos for the Q&A session here: one, two, three. You can watch the 11-minute Q&A on Facebook, but they force you to “Like” Virgin Mobile Live in order to see the video. Cameron talks a lot about shooting Sanctum under-water and diving, but also answers a couple questions about True Lies 2, filmmaker and Twitter.