http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery Collection for: Natural and Man-Made Structures 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[Shipwrecks and other artificial structures increase the potential for large invasions of unwanted species into coral reefs, even relatively pristine ones. In this picture, a shipwreck in the remote Palmyra Atoll in the central Pacific Ocean resulted in the dense colonization of an invasive coral-like species called Rhodactis howesii, pictured here.]]> http://gallery.usgs.gov/photos/08_03_2009_kpf6JVu22C_08_03_2009_2 <![CDATA[Shipwrecks and other artificial structures increase the potential for large invasions of unwanted species into coral reefs, even relatively pristine ones. In this picture, a shipwreck in the remote Palmyra Atoll in the central Pacific Ocean resulted in the dense colonization of an invasive coral-like species called Rhodactis howesii, pictured here.]]> http://gallery.usgs.gov/photos/08_03_2009_kpf6JVu22C_08_03_2009_3 <![CDATA[Shipwrecks and other artificial structures increase the potential for large invasions of unwanted species into coral reefs, even relatively pristine ones. In this picture, a shipwreck in the remote Palmyra Atoll in the central Pacific Ocean resulted in the dense colonization of an invasive coral-like species called Rhodactis howesii, pictured here.]]> http://gallery.usgs.gov/photos/08_03_2009_kpf6JVu22C_08_03_2009_4 <![CDATA[Building 3 at the USGS location in Menlo Park, CA, looking across the flagpole circle.]]> http://gallery.usgs.gov/photos/06_02_2009_nsj7MYx43G_06_02_2009_7 <![CDATA[Scientist Jonathan Godt samples a landslide headscarp in Alameda County, CA. ]]> http://gallery.usgs.gov/photos/03_04_2009_hlc5Frq1EY_03_04_2009_0 <![CDATA[Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT. ]]> http://gallery.usgs.gov/photos/03_04_2009_hlc5Frq1EY_03_04_2009_1 <![CDATA[Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT. ]]> http://gallery.usgs.gov/photos/03_04_2009_hlc5Frq1EY_03_04_2009_2 <![CDATA[Scientists Jonathan Godt and Rex Baum examine a fresh debris-flow deposit near Buena Vista, CO. ]]> http://gallery.usgs.gov/photos/03_04_2009_hlc5Frq1EY_03_04_2009_3 <![CDATA[The USGS Alaska Science Center is located Glenn Olds Hall on the Alaska Pacific University campus.]]> http://gallery.usgs.gov/photos/03_03_2009_cgw3Anl88T_03_03_2009_0 <![CDATA[Photo of River Mile 3 taken before the 2008 Glen Canyon experiment.]]> http://gallery.usgs.gov/photos/162 <![CDATA[Photo of River Mile 3 taken after the 2008 Glen Canyon high flow experiment.]]> http://gallery.usgs.gov/photos/163 <![CDATA[Photo of River Mile 45 taken before the 2008 Glen Canyon high flow experiment.]]> http://gallery.usgs.gov/photos/164 <![CDATA[Photo of River Mile 45 taken after the 2008 Glen Canyon high flow experiment.]]> http://gallery.usgs.gov/photos/165