This is an image of the Great Barrier Reef on the east coast of Australia - 2000 kilometers long. This is the largest reef on Earth today. (Courtesy LPI/NASA)

The source of this material is Windows to the Universe, at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). ©1995-1999, 2000 The Regents of the University of Michigan; ©2000-01 University Corporation for Atmospheric Research. All Rights Reserved. Site policies and disclaimer