The octopus almost reaches alien status when it comes to its brain and nervous system. And yet, the differences can help us understand more about the human brain as well as unique solutions nature has come up with for difficult problems like camouflage. Octopuses can see polarized light, but cannot see color. However, their skin changes both color and texture to camouflage with the surroundings.
For more info:
Courage, Katherine Harmon. “How the Freaky Octopus Can Help Us Understand the Human Brain.” Wired. Conde Nast, 1 Oct. 2013. Web.
Groskin, Luke. “I, Octopus – Science Friday.” Science Friday. N.p., 16 June 2016. Web.