Leviathan

The latter half of the film is one long feeding frenzy, guided by a familiar horror-film principle: survival of the best-looking.

Leviathan is intermittently interesting, but it's a bad sign that the movie starts losing its punch when the monster shows up.

The effects by Stan Winston are typically polished, even if the creature looks like the usual assemblage of teeth and tentacles.

As far as rip-offs go, this is one of the best.