http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery for tag: Gloeotrichia http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[What's In My Water?]]> http://gallery.usgs.gov/photos/08_11_2010_qul8Oba44I_08_11_2010_1 <![CDATA[What's in My Water?]]> http://gallery.usgs.gov/photos/12_07_2009_s85Are1QPk_12_07_2009_0