MANUEL PRESTI / SCIENCE PHOTO LIBRARY MANUEL PRESTI / SCIENCE PHOTO LIBRARY
Ice crystals extruded from a twig. The strange shape of the crystals is due to water from the interior of the twig expanding as it freezes. This forces it out of the twig through pores and holes in the wood, where it freezes solid in the air. Photographed in Michigan, USA, in January.
Model release not required. Property release not required.