Human eyes rely on three types of photoreceptors to detect color: red, green and blue. Mantis shrimp, on the other hand, have between 12 and 16 types of photoreceptors. This allows them to see a ...

The discovery that the eye of a particular mantis shrimp has an achromatic quarter ... be found in biological samples — particularly in photoreceptor cells. But here, it is used for a specific ...