"You know you're in a cinema, you know it's not real, it was filmed 15 years ago, Kate and Leo don't look like that anymore, but there's a part of your brain saying, hey we've got to take this seriously because this is three-dimensional," Cameron said. "Your mind is being tricked to think that you're really there, so now the emotions count more."
Cameron nearly missed the "Titanic 3-D" premiere because, just yesterday, he was at the bottom of the Mariana Trench in the Western Pacific, roughly seven miles down in the deepest part of the world's oceans.
Only two other people have ever been down that deep. In 1962, then-Navy Lieutenant Don Walsh and a Swiss co-pilot dove into the trench. More than 50 years later, Cameron made the deep dive alone, down to what he described as a "lunar landscape."
"I've got some good engineers," Cameron said. "If we thought we were going die, diving this sub, we'd be idiots."
Cameron said he saw bizarre-looking creatures with no eyes in the "darkest, most remote place" on the planet.
"They either have no eyes at all or they have eyes that are adapted for seeing the bio-luminescence of other deep ocean animals, so they can go either mate with them or prey on them," Cameron said. "About the only two things on their mind down there, pretty much like us."