:shocked!!!!-My hypothosis is:I think the Predalien has the ability to give birth to other aliens hybrids or other predaliens!!!,OR,(In the image above) it looks like it could be a space jockey being chestbursted!?.But to me,it looks like it could be the predator's experementing at the begining of the movie(or End) with the aliens.The swim scene looks like it eather takes place in the pool,or a ocean,lake.And the part when it shows the aliens moving past the soilders is cool to.