Kudos to the Marine Biological Laboratory in Woods Hole, Massachusetts. In what I am assuming was some academically justifiable research, this squid was hooked up to a special IPOD bumping Cypress Hill’s “Insane In The Brain”. For the record, squid do not possess ears persay, but they do have the ability to be stimulated by sounds via impulses or something or other. Here’s an explanation of what you are seeing from some white coats.
The video is a view through an 8x microscope zoomed in on the dorsal side of the caudal fin of the squid. We used a suction electrode to stimulate the fin nerve. Chromatophores are pigmeted cells that come in 3 colors: Brown, Red, and Yellow. Each chromatophore is lined with up to 16 muscles that contract to reveal their color.
In other words, the illest observation of calamari rap ever!
Okay, enough of my scientific ineptitude, here’s a link to a conclusive scholarly report about this study at Neural Control of Tuneable Skin Iridescence in Squid! (via brainpicker)