There’s a popular saying that “the eye is the jewel of the body.” This saying is not only referring humans, animals have some eyes that are nothing short of beautiful. Contents1. Mantis Shrimp2.

This marks the point when light detection becomes vision proper and when bundles of photoreceptors become bona fide eyes. Animals with stage-three eyes can find suitable homes, as sea stars do ...

The images below each show a scene as viewed by a human. Drag the slider to the left to see how an animal would see the same scene. Whereas human eyes contain three types of colour-detecting cells, ...