It’s a 3d illusion of a salamander by Matthew Gates . He used two virtually identical photos to make a stereoscopic gif.
Ryan is a professional nerd, teaching engineering in the frozen north. Somewhat less professionally, he is a costumer, author, blacksmith, juggler, gamer, serial enthusiast, and supporter of the Oxford comma. He can be found on twitter and instagram @studentofwhim. If you like what I do here, feel free to leave a tip in my tipjar.