Rented this movie the other day and let me just say what a weird movie. Creepy a little. Has anyone else seen it? I really didn't quite understand it. The aliens for instance, why were they there, why were they "afraid" of water, why did they leave symbols everywhere, why did they shoot poisen and kill some, and why did they just disappear?

I've watched this movie way too many times, but I still love it.

The aliens weren't exactly afraid of the water. It's more like acid to them. Like in the end when the water falls down on the aliens and it just eats through him. The aliens go away cuz they were getting defeated. People were hosing them down. They came to feed on the humans. Guess humans are edible to them or something. And the signs on the ground were for navigation. At least that's how I found it.

Let's see... Aw man, I have to watch the movie again. I know the kid Morgan says it. He says it near the end when they begin attacking.