). So, basically we see in red, green and blue, 3 primary colors, and the rest of them all is got by mixing these 3.
- The small and grumpy purple spot mantis shrimp, Onodactylus smithii, is the winner of vision in colors.
Remember we have 3 primary colors?. Well, this critter has 11 or 12 primary colors. Also, they have eyes that simultaneously measure four linear and two circular polarisations, enabling them to determine both the direction of the oscillation, as well as how polarised the light is. (Source: ).
- Many birds see ultraviolet.
IN THE EARLY 1970s, A RESEARCHER testing the ability of pigeons to discriminate colors discovered by accident that the birds can see ultraviolet (UV) light. The finding was deemed curious but not too important. “It was natural for scientists to assume that bird vision is like human vision,” saysSouce ( and the author of Bird Coloration. “After all, birds and humans are both active by day, we use bright colors as cues. ... No one really imagined birds might see the world differently.” )
But during the following decades, systematic testing of bird vision revealed something unexpected: Many bird species—not just pigeons—can see UV light. Indeed, with the exception of night-flying birds such as owls, the eyes of most birds probably are even more sensitive to ultraviolet light than they are to what we call visible light. Scientists also have learned that many birds have plumage that reflects UV light. Together, these discoveries “made us realize there could be new answers to old questions,” says . Birds rely on vision to choose mates, find food and scan for predators, for example. “If you assume birds see exactly what we see, you could have the wrong framework for understanding bird behavior,” Eaton says.
Also, many insects are able to see ultraviolet. This time you'll have to trust on me because I'm not adding links here.