In the end of Alien vs Predator Scar Helps throw the queen alien into the ocean right? Well it's said aliens can adapt to any atmosphere, which includes the extreme cold. Also that includes atmospheres with no air. So there's no air under water but they can adapt. So when the queen was thrown into the water, did that kill her. Also it's said aliens can breath under water so she could have survived and made an under-water hive, couldn't she? There's the solution that the pressure could have killed her, but if the can adapt, that may include atmospheres with extreme pressure.
