For whatever reason, 1989 was a big year for underwater movies. Unfortunately, the only film that ended up being any good was James Cameron's awesome THE ABYSS. The rest sucked. The less suckiest of the remaining suckers was LEVIATHAN which is simply an underwater retelling of ALIEN mixed with THE THING, but with all of the tension removed and replaced with bigger flamethrowers.
One day, some deep sea miners are doing their deep sea mining duties when they discover a sunken Russian ship called Leviathan. Stuff happens and before you can say "Oh god, I hope my penis doesn't fall off!" people are starting growing icky scales and weird stuff like a mouth on their hand. That sounds really cool, but after the initial shock wears off, it just turns into your standard monster movie.
Overall, LEVIATHAN is an entertaining ride and a neat time capsule to the world of cheesy-looking 80's monsters. A little blood, mildly scary monster, average special effects, awesome failed attempt at a catchphrase ("Say 'Aah.' motherfucker!"), good acting, average monster movie pace, strong cast. Not a horrible movie, but it's nothing to write home about either. Honestly, I expected more from the director of RAMBO: FIRST BLOOD PART II and TOMBSTONE.
Is that Luxo?!