This entry was published at least two years ago (originally posted on January 9, 2020). Since that time the information may have become outdated or my beliefs may have changed (in general, assume a more open and liberal current viewpoint). A fuller disclaimer is available.
We now know that cuttlefish have stereoscopic vision…: because scientists tested the theory by having the cuttlefish wear 3D glasses and showing them 3D movies of shrimp and watching where the cuttlefish tried to strike to eat the shrimp. Not only is it cool, but CUTTLEFISH WEARING 3D GLASSES!