An underwater cave diving team experiences a life-threatening crisis during an expedition to the unexplored and least accessible cave system in the world.
Nicely photographed, but otherwise mediocre adventure drama with no surprises.
Maltin**1/2: "The characters are painted in the broadest strokes (in keeping with prducer James Cameron's m.o.), but the underwater is consistently exciting - and convincing. Makes excellent use of 3-D."