Kroft talks about Movies's video: How Can Xenomorphs See Sensory Organs Explained

The Xenomorph XX121,better known just as Xenomorph which literally translates to "strange form" from Greek. While xenomorphs are considered to be a perfect organism, they don’t seem to have a pair of eyes which would be a disadvantage for a hostile animal that is known for its excellent hunting skills. That brings up a question how can xenomorphs see and do they have eyes at all ? I’m gonna go over the biology of Alien sensory organs, which would give us some insights on how xenomorphs actually perceive the world around them and I’ll also explain why their heads are so big compared to the rest of the body. There has been one detail on an alien's head that may be an eye but it's so small and the same black as the skin. So it is hard to say if these are eyes or just an implant. Giger, creator of the Xenomorph design, percieved the Alien as being vaguely human but a human in full armor, protected from all outside forces. He stated that the creatures don’t have visible eyes, because he felt that it made them much more frightening if you could not tell if they were looking at you. In the Alien vs. Predator series, the game implies that the Xenomorph sees using its attack tongue, which serves as a sensory organ. That’s why are a number of instances when Xenomorphs use their inner jaw for different purposes other than attacking. To study the environment, they can extend their inner jaw , which may be an equivalent of ears, nostreals or even eyes. That would explain inner jaw movements when Ripley discovers a xenomorph on the ship and when Gediman oberves an alien behind the glass. It is also widely assumed that xenomorphs identify enemies by sensing pheromones. This has never been explicitly confirmed nor denied, but a Drone will not kill a host body already infected. This way, by sensing pheromones the xenomorphs in Alien 3 is able to identify that Ripley has an alien embryos inside of her. Another idea is that their whole head is one big insect-like eye; in Alien 3, a fish-eye lens represented the Runner's sight, but it is unknown if this is really how it sees or simply artistic license. Another theory proposes that the eyes are similar to a desert lizard's eyes, meaning that they lay under a thin layer of skin, yet are deep enough that they are not visible from the outside. This is seemingly supported by early models and toys of the Warrior Xenomorph while Alien was still the only existing movie in the timeline. These show an actual, physical, humanoid skull with eyesockets built under the smooth carapace. Due to the absence of clearly visible eyes, it is possible that the creature uses echolocation to see its environment, much like bats. It may be for this reason that Xenomorphs make these weird sounds almost constantly. Echolocation would also allow Xenomorphs to “see” trough obsticales, which would be supperior to a regular vision. Another interesting theory Xenomorphs may be able to detect their 'prey' through electro-reception. This is the method sharks use to detect even the most hidden prey. Creatures with the electro-reception sense can detect the electromagnetic field all animals produce allowing them to detect the creature's heart beat. This would explain how Xenomorphs always know where the humans are. And, as depicted in the Aliens vs. Predator games, the Xenomorphs can also detect their prey using pheromones Early Xenomorph designs may indicate that the eyes of a Xenomorph are behind their black carapace and they see through it, similar to a one sided mirror (except in this case no one can see in, but the Xenomorph can see out). Some species of terrestrial fish see through a transparent layer of skin so it is possible Xenomorph vision is similar. Xenomorph head may be so big due to a variety of different sensory organs listed above, however there is another explanation why xenomorphs need such a s big head.It's assumed that alien inner jaws are powered by extremely strong muscles inside the creature's head, that enable it to be quickly launched and retracted. To obtain such force and speed, there has to be an really strong muscle that would probably occupy a good amount of space. Another theory is that the inner jaws are pneumatic, and the long head assists in pressurizing them. That's how it gets the force required to punch through skulls and even metal helmets. Atlantis by Audionautix (http://audionautix.com) is part of the YouTube Audio Library (https://www.youtube.com/audiolibrary/...) and it's licensed under a Creative Commons license (https://creativecommons.org/licenses/...).