These superbly timed images by Art Wolfe, who is perhaps the most aptly named person on the planet, propose a visual challenge for the careful observer. Wolfe began this series of photographs in 1989, and although he published his findings in 2005, he considers the project ongoing. To date, the dedicated artist has published 80 books of his photography subjects. In each of these photographs, there's a hidden creature waiting to be discovered. If you can't figure it out, scroll over the image for the answer.
Just kidding. That's not how this works. Happy hunting!