You probably think you could take an octopus to a 3D movie. Maybe you think it would look cute in those little glasses, with a cup of Coca-Cola in one tentacle, some popcorn in another and a bag of candy in a third. I bet you're imagining how when something jumps at the screen, it would get scared and camouflage to the same color as the seat. Well, too bad, 'cause it's never gonna happen. You know why? I'll tell you why. Unlike ours, octopus eyes can see the polarization of light. The two superimposed images wouldn't look similar to it, even a little. You fool. You buffoon. And I know what you're thinking. We'll just watch a stereoscopic 3D movie. It'll look even cuter with the red and blue glasses they have for those. But you sound like even more of a dunderhead now, because you know what? Octopus eyes rely on single photoreceptors. They don't even see color! And I know what you're thinking. I know you're about to say that some researchers have proposed a mechanism where octopuses could use chromatic aberration to still determine color information, but you know what? That's just a theory someone came up with! No one's ever been able to train octopuses to distinguish between colors in the lab, so don't you look like a big old clown right now. And lemme stop you before you try to come up with some more featherbrained nonsense, because it gets worse. Octopus eyes aren't even positioned for binocular vision! They may not even be that good at perceiving depth, seemingly relying on a combination of light polarization and bobbing their head. So it'll never work! You're never going to take an octopus to see Finding Nemo 2 in 3D! You just won't! Give up on it already!





















