Honestly, octopuses are the closest thing we have to actual aliens. It’s not just that they look strange; their biology feels like it was designed for a sci-fi movie. They have three hearts, pump blue blood, and don’t just have one brain—they effectively have nine.
Two-thirds of their neurons are actually in their arms, meaning their limbs can essentially “think” for themselves. Since they have zero bones, they can pour their entire bodies through a hole the size of a quarter. Combine that with the ability to instantly shape-shift and change color, and you have a hyper-intelligent little freak.