Apple has just released the first trailer for Sanctum, which will hit theaters nationwide on February 4, 2011. Click below to watch the footage from this 3D underwater thriller, which is executive produced by James Cameron and directed by Alister Grierson. We also have seven brand new photos from the movie, which you can click below to access our photo gallery:

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The 3D action-thriller Sanctum, from executive producer James Cameron, follows a team of underwater cave divers on a treacherous expedition to the largest, most beautiful and least accessible cave system on Earth. When a tropical storm forces them deep into the caverns, they must fight raging water, deadly terrain and creeping panic as they search for an unknown escape route to the sea. Master diver Frank McGuire (Richard Roxburgh) has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team--including 17-year-old son Josh (Rhys Wakefield) and financier Carl Hurley (Ioan Gruffudd)--are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out. Soon, they are confronted with the unavoidable question: Can they survive, or will they be trapped forever?