As captioned in my textbook: "An overhead view of a frog that is being levitated in a magnetic field produced by current in a vertical solenoid below the frog. (The frog is not in discomfort; the sensation is like floating in water, which frogs like very much.)

(Courtesy A. K. Gein, High Field Magnet Laboratory, University of Nijmegen, The Netherlands)"

Image and more information from: http://www.ru.nl/hfml/research/levitation/diamagnetic/ ("In addition, the frog picture will probably help students studying magnetism to get less easily bored.")

( Because not everything has to be exams and final projects, gee dee ai. Sometimes there are frogs. )