We have weak characterizations, shaky underwater sequences (movies like The Abyss raised the bar for those), very poor editing, and dangling plot lines.
The notion of encountering alien civilizations was most recently done in "Contact," using the ocean floor as a staging area is straight out of "The Abyss," and even the film's key plot device is yet another reworking of a scenario that 1956's "Forbidden Planet" pioneered.
Without totally blowing the surprise element of this movie (which in any event I'm urging all but the staunchest Crichtonheads to skip), I have to tell you that what Levinson and company have cooked up here bears as much resemblance to, say, Roger Corman's schlocky Galaxy of Terror as the blend of The Abyss and Contact you've been led to expect.
Drawn to the sci-fi genre by a scenario that relied less on hardware than the relationships between a group of investigating scientists trapped inside a claustrophobic submarine pod, director Levinson has made a Solaris-meets-The Abyss with dramatic knobs on.
Sphere starts off as The Abyss , then turns into Event Horizon and finally turns out to be Forbidden Planet and Solaris . . .