"We actually made a conscious decision when we started this movie to really embrace 3D differently than before," says visual supervisor Markus Manninen. "Before, we used it in a limited way sometimes and then as a way to make certain moments really big. Here, we actually embraced it to the point of immersion."
You'll notice subtle 3D bits of dust in the cave air and bugs in the forest, while your kids will love the over-the-top 3D action scenes, including the impending doom of a flock of "piranhakeets" (that's a deadly piranha mixed with a cute parakeet).
Source: DreamWorks Animation