title: Berthelinia rottnesti
text: # Berthelinia rottnesti
  
  Berthelinia rottnesti is a species of a sea snail with a shell comprising two separate hinged pieces or valves. It is a marine gastropod mollusc in the family Juliidae.
  
  ## Distribution
  
  The type locality for this species is Rottnest Island, Southwestern Australia.
  
  ## Description
  
  Berthelinia rottnesti is approximately 6 mm.
  
  ## Ecology
  
  This species can be found in algae and seaweed beds.
  
  