title: Larkinia grandis
text: # Larkinia grandis
  
  Larkinia grandis is a genus of saltwater clams in the family Arcidae, the ark clams.
  
  ## Description
  
  Shell of Larkinia grandis can reach a diameter of about 7.5 centimetres (3.0 in) and a height of about 9.6 centimetres (3.8 in). These shells are white, with 26 ribs and a dark, smooth periostracum.
  
  ## Distribution
  
  This species is present in the North Pacific Ocean (Mexico, El Salvador, Peru, Gulf of California).
  
  