It is pretty grim, but apparently, the whole god damn thing is just an urban legend! I saw on this site 'the experts' view, and he said that it is basically all a load of bollocks and that the camel spider does not eat flesh, does not have venom, does not run that fast and make screaming noises, and that the photo is exaggerated because if you look closely you'll see that the spiders are infact quite close to the camera (look at the guys sleeve in the foreground). But! what these sickos are said to do is steal bits of hair of animals for their nest etc, that includes crawling on marines' heads and pincing off bits of their hair too!