Do all animals see the same frequencies of visible light as humans do?

Answer 1

no because there color blind- <--- To elaborate on this misleading answer, each animal's eyes are sensitive to a different range of light frequency. It has nothing to do with being color blind, which isn't even relevant. Our eyes don't see color. Our eyes don't SEE anything. They are simply sensors that are only sensitive to light waves that hit the surface of the eye at 430-780 TRILLION vibrations per second. This information is transmitted to the brain through nerves by using electrical charges, which the brain then receives, interprets, and creates a visual of what your eyes have just fed it. Notice how, in that whole process, you never actually saw any color? The brain interprets different frequencies of light as different colors, NOT the other way around. It's not that we can see colors and other animals are inferior because they cannot... our brain actually creates color where there wasn't any in the first place.

But it is absolutely impossible to imagine what the reality of another animal looks like, because even if you can imagine seeing life though a dog's eyes, you CANNOT imagine how a dog's brain interprets that information, or conceive what sort of image it then creates. Bats don't see much light, but as these vibrations go between the realm of light and sound (100kHz - 130kHz), they are able to make a sound in that frequency range, and based on the way their ears read the reflection of those sound waves, their brain creates an image that we would call "sight."

No, animals all see different ranges of light. Some fish can even "see" into the infrared frequencies. Down at the bottom of the ocean, there is no "visible" light, but animals down there do not starve to death because they have ways of creating a visual of their environment, and we can't even imagine what this creature who has never actually been exposed to sunlight could be interpreting, but I'm willing to bet that it doesn't see dark water.

When it comes to light, it's not so much about what frequencies the eyes work at for each animal, but more about what frequencies that brain considers relevant enough to it's survival to translate into an image of the world. One aspect (the light frequency) is completely irrelevant, because the other (the response another animal's brain will have to that frequency) is completely incomprehensible.

Even among different humans, this is true. And this is the reason that some humans are "color blind." We know that when a certain light frequency reaches our eyes, there is a color that we both can identify as "red" because we learned early on to associate the color we see to the word "red." But it is impossible to know if the color that your brain creates as "red" for that frequency is the same color that mine creates for "red." If I were to somehow acquire your brain, there is a good chance that I'd be viewing a world full of colors that I've never even seen before, let alone know how to identify. Besides, the colors I identify as "blue, red, green" are all things that MY brain created, and I probably wouldn't find any color I've ever seen before ANYWHERE in my line of sight. I'd just have to learn "this color right here is red" the same way you did.