Ramon Martin, a fish biologist with the U.S. Fish and Wildlife Service, displays a water sample from the Calaveras River to high school students near New Hogan Dam, Valley Springs, Calif., Oct. 22, 2011. The students, from Stagg and Bear Creek high schools of Stockton, Calif., experienced real life learning through activities including water sampling, aquatic life samples, an underwater video camera and fish habitats as part of the Calaveras River Education and Appreciation Day. The U.S. Army Corps of Engineers Sacramento District helped host the event, in partnership with the U.S. Fish & Wildlife Serviceâs âConnecting People with Natureâ program.(U.S. Army Photo/ Michael J. Nevins)
May 16, 2014
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