sentences:  The river was named for mussel and clam shells found along the river and along Shell Lake, its origin.The Shell River issues from Shell Lake approximately southwest of Pine Point in Carsonville Township in eastern Becker County, and initially flows southeastwardly through the Smoky Hills State Forest into southwestern Hubbard County and northwestern Wadena County, to Blueberry Lake, which collects the Blueberry River.From Blueberry Lake, the Shell River flows eastwardly in a winding course through northern Wadena and southern Hubbard counties, passing through Huntersville State Forest and collecting the Fish Hook River from the north.