title: Marginella helmatina
text: # Marginella helmatina
  
  Marginella helmatina is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.
  
  ## Description
  
  The length of the shell attains 20 mm.
  
  ## Distribution
  
  This marine species occurs off Gabon and São Tomé and Príncipe.
  
  