this post was submitted on 23 Mar 2024
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Mantis shrimps have the most complex eyes in the animal kingdom and have the most complex front-end for any visual system ever discovered. Compared with the three types of photoreceptor cell 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 stomatopods can tune the sensitivity of their long-wavelength colour vision to adapt to their environment. (Wiki)
https://viewtube.io/watch?v=Qts264cpvfs
While they do have many kinds of photoreceptors, and can therefore see a large range of colours, they have very limited colour resolution: https://www.nature.com/articles/nature.2014.14578
As far as I understand it, they cannot blend the different light components nearly as well as humans do (e.g. seeing red and green at the same time and deduce that is yellow).