Somewhere in this Aliens meets 20000 Leagues Under the Sea mismatch is an interesting movie waiting to get out. However, it's not the special effects monster that wreaks havoc in the second half of the film. Rather, it's seen in the first 30 minutes of the film, where a mixed gender crew of undersea miner's attempts to work together and keep out of each others hair in the last 3 days of a long shift at sea. Labor problems, malingering, sexual tension, lots of stuff for an interesting, if offbeat, sci-fi film.
Instead, just as we start to get interested in the characters and their strange, if claustrophobic world, along comes Nessie, in the form of infected vodka lifted from a sunken Russian ship that works some unpleasant effects on members of the crew. There's no need to describe the resulting carnage, as we've seen it all too many times in far better films.
Leviathan is better than it ought to be thanks to a first class cast and some better than average make-up and special effects work. Definitely a B film with some bite, and best relegated to the second or third video in a Saturday nite sci-fi blitz.
3 out of 5 stars for a strong start and good production values