What? It's not supposed to be a good movie, you say? Oh, thank goodness. Glad we got that out of the way. Moving on!
So first of all, I gotta say that I loved one of the first shots of the movie. Right before the guys go out on the boat, there is a hilarious shot of a freaking one-legged seagull, whom I am nominating as the real star of the film. Like, was that just dumb luck or what? If so, that's pretty dang lucky because if you happened to notice it, that shot was simply awesome.
Humanoids from the Deep anyway? Let's check out the fun stuff.
The fish monsters are pretty much just like the Creature from the Black Lagoon, with some added long gorilla arms and a weird bulging brain on the outside of its head. Razor-sharp teeth and lots of seaweed draped over their shoulders completes the look. The fish monsters focus on using their claws to gash anybody that gets in the way of them finding the girls who look the best naked to make whoopie with. So of course there's no shortage of boobs here, much like every other slasher movie from the 80s.
Like I said, explosions and fire are another big thing in Humanoids from the Deep. In the first scene (where a poor little boy becomes the first fish monster victim) there's a huge boat explosion on the water. Not long after that, the nice Indian's house is blown up by the racist townies. And not long after that, a girl dies when a fish monster attacks her while she's driving a truck, the truck skids off a bridge, and - you guessed it - it explodes. The big fight at the end when the fish monsters attack the Noyo Salmon Festival (wow, what exciting lives these people do lead) also includes some nice fire effects - a little kids makes the best creature kill when he throws a flaming javelin at one of them. See what I mean? Fish monster rape and explosions. Obviously that's all you need to make a film.
The gore scenes throughout are pretty good. A bit more graphic than I was expecting, only because I was expecting the filmmakers to hide the fact that they probably had a shitty makeup effects team. There's lots of face- and body-gouging and stabbing and shooting of the creatures, and one great little bit where a creature rips at this guy's neck and there's like, a ton of blood spraying out. All this stuff actually looks very good (aside from the too-bright blood) and I was pleasantly impressed.
The final scene comes as no big shock. With all the aforementioned fish monster rape and that one girl who is left alive after the attack, you should have guessed that the climax would involve something that is a cute little mish-mash of the birthing scene from The Fly and the bursting-through-the-chest scene from Alien. One thing I'm a tad fuzzy on though is the intentions of Dr. Drake. It seemed like at the end that she got herself involved in all this because she actually wanted the fish monsters to mate with a human and see what comes out. Yes? No? Probably. Scientists are stupid like that sometimes.
So that's Humanoids from the Deep! Light on plot, heavy on fish monster rape and explosions. And that's about it.