title: Margarella antarctica
text: # Margarella antarctica
  
  Margarella antarctica is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails.
  
  ## Distribution
  
  This marine species occurs off the South Orkney Islands, the South Shetland Islands, the Antarctic Peninsula, and the Bellingshausen Sea.
  
  ## Description
  
  It is orange-yellow, with two pairs of cephalic tentacles with large black eyes. The shell is small, and wider than it is high. The orbicular, deeply umbilicated shell has an obtuse-conical shape. It contains four convex whorls, the last of which is adorned only by growth lines. The oblique aperture is sub-circular and pearly inside. In, adults its edges are joined by a callus . The operculum is polygyrous spiral. The color of the shell is bluish gray or greenish. The maximum recorded shell length is 12.5 mm.
  
  ## Habitat
  
  Minimum recorded depth is 0 m. Maximum recorded depth is 24 m.
  
  