Overview:    The Bliss Rapids snail is a nocturnal feeder, grazing on algae and diatoms on the bottom of cold, free-flowing streams along the Snake River.  During the day, it can be seen attached to the sides and bottoms of the rocks.  This snail is yet another species that has been heavily impacted by the numerous dams that obstruct the natural flow of the Snake River.  Other threats to the survival of the Bliss Rapids snail is agricultural run-off of pollutants, and the lowering of the water table by water diversion projects or pumping.  The full contents of the final recovery plan for the Snake River, and its endemic species, can be viewed at http://endangered.fws.gov/recovery/recplans/index.htm.