The eyesight of mantis/pistol shrimp is similarly crazy in it's complexity and it's in an invertebrate. Evolution seems to pick out some crazy stuff when it com

The eyesight of mantis/pistol shrimp is similarly crazy in it's complexity and it's in an invertebrate. Evolution seems to pick out some crazy stuff when it comes to animals near the water-air interface. For instance, they are able to detect circularly-polarized light across multiple octaves of light with a single receptor, covering all the Stokes' vectors. I've done a fair bit of optics and I have NO idea how to begin constructing a quarter-wave plate that would cover multiple octaves. So crazy. https://en.wikipedia.org/wiki/Mantis_shrimp#Eyes https://en.wikipedia.org/wiki/Mantis_shrimp#Eyes