Mantis shrimps are unusual creatures. After their beautiful coloration and extraordinary hunting ability, they are characterized by an absolutely amazing visual system.
Their eyes are mounted on mobile stalks and can move independently of each other. They are thought to have the most complex eyes in the animal kingdom and have the most complex visual system ever discovered. Compared with the three types of photoreceptor cells that humans possess in their eyes, the eyes of a mantis shrimp have between 12 and 16 types of photoreceptor cells. Furthermore, some of these shrimp can tune the sensitivity of their long-wavelength colour vision to adapt to their environment.
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