One reason 3D works so well for undersea movies is that spacial relationships and depth of focus are affected by the water, making it easier to "trick" our brains into seeing in three dimensions.
As he did in his stunning 1997 3D doc "Into the Deep," director Howard Hall makes excellent use of this aspect to assemble some great photos. You almost feel as if you're rubbing noses with some of his subjects.
But the movie has little new to offer to conservation. It hopscotches around the globe focusing on ocean ecosystems that depend on symbiotic relationships to survive. It's not much of a surprise when the film reaches its conclusion and announces that humans need to realize that they are part of nature's balancing act, too.
**½ out of four stars
Where: Great Clips Imax Theatre