This was from a flicker group doing Photoshop tennis with the subject matter Charles Darwin. A version of this game eventually made it onto the cover of a book.
Note Beagle, finch, Lamarck’s giraffe, beards on iguanas, tree of life sketch coming out of bible. Also subtle images on the cloak. I’ve always liked the faint double-take in his eyes: that sense of slightly lopsided caution and humility.