Pathikrit Bhattacharyya (aka Po), from Casey Dunn's Invertebrate Zoology (Biol 0410) course at Brown University, tells the story of how the lancet liver fluke gets through life. Visit http://creaturecast.org for more stories about the unexpected world of Biology. The hand-drawn animations were photographed at the Brown University Science Center (http://brown.edu/academics/science-center/). Audio was recorded at the Granoff Center for the Creative Arts (http://brown.edu/academics/creative-arts-council/granoff). The songs Staccato and Spooky are by Alastair Cameron (http://freemusicarchive.org/music/Alastair_Cameron/).