From the New York Daily Photo Blog:

This sculpture - Move Along, Nothing to See Here by Cai Guo-Qiang on the roof garden of the Metropolitan Museum of Art, is one of two life size of crocodiles suspended on bamboo poles overlooking Central Park, with the exclusive residential buildings of Central Park West as a backdrop.

They are stuck with sharp objects actually confiscated by airport security. There are many different ways to view this piece, so we will leave its interpretation to you...