When the watery, spectral sirens appear around Sinbad’s ship, he and all the crew are mesmerized and want to follow the sirens into what will be a watery grave. Fortunately, Marina is not so gullible and she and the bull dog, Mike, save the day.   In this animated comedy adventure film, Brad Pitt plays Sinbad, the famous (or is it notorious?) Arabian sailor-hero (or is it daring rogue?); Catherine Zeta-Jones is Marina, the woman who knows something about shipboard romance; and Michelle Pfeiffer is the dark-haired, aptly named goddess of discord.