Alien invasion

I suddenly have to take shelter. I see a rock outcropping/shallow cave and run in. Inside is a movie theater, I'm sitting with a friend who cuts my hair watching the opening sequence.

There's no dialog throughout the entire movie. A lizard/amphibian-like alien attaches itself to a naked woman's genital area while the woman is standing on her head. After a moment it detaches itself leaving a smaller but morphologically identical offspring attached. A few other women have the same type of creatures feeding off them - the rest of the women seem to have been infected by spores. The aliens develop as parasites, attached with clamps. Their heads are cobra-like. The parasites make the woman feel affectionate towards them - they cuddle and nurse the disgusting creatures as the develop.

In the next scene, I'm watching the movie from withing. I'm on the edge of a steep cliff with a body of water below. A few men are in a watercraft - one of them falls overboard into the crocodile infested water. The crocodiles aren't harming the human, but he seems in danger. A man standing next to me who doesn't know how to swim heroically jumps in to try to help the man overboard. The water is absolutely teeming with crocodiles - there is just as much or more crocodiles in volume as there is water.

There is a swifter moving crocodile-free body of water separated by metal bars. A gate in the barred wall opens and a few crocodiles cross over. I know this is a serious situation and think about diving in to shut the gate, but see the aliens have melted the latching mechanism on the gate to it can't be closed.

I turn my attention back to where the watercraft was. There are half a dozen or so mesh cages with gigantic living human heads inside floating in the water.