SS Superhero photo challenge - abstract

Over at Shutter Sisters, Andrea was reminiscing about Highlights magazine and the section at the back of the magazine where you had to guess what an object was based on a very close up photo of it. My dad was a doctor so he would bring home the magazine for us to read. I always loved that game and the hidden pictures page, too. ( remember Goofus and Gallant? ). Anyway, when I saw this challenge I browsed through some of my photos but this image that my daughter took I thought fit the challenge the best. Can you tell what it is?