Photo 397294, (c) Michael Gras, M.Ed., some rights reserved (CC BY), uploaded by Michael Gras, M.Ed.

Attribution © Michael Gras, M.Ed. some rights reserved Uploaded by mikegras Source Flickr Original http://www.flickr.com/photos/mikegras/9198036782/ Associated observations Photos / Sounds 4 photos What Washboard (Megalonaias nervosa) Observer mikegras Date July 2, 2013 Place Wood County, US-TX, US (Google, OSM) Date Added July 3, 2013 10:14 AM CDT 3 IDs Research Grade View Sizes small medium large original