A shell of Cellana ornata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Patellogastropoda
Superfamily: Lottioidea
Family: Nacellidae
Genus: Cellana
H. Adams, 1869
Type species
Nacella cernica H. Adams, 1869

See text

  • Bertinia Jousseaume, 1883
  • Helcioniscus Dall, 1871

Cellana is a genus of sea snails or limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.[1]


This genus occurs in the temperate and tropical Indo-Pacific oceans, Hawaii (where they are known as ‘opihi and considered a delicacy) and around Australia and New Zealand. Species are also found around the coasts of Japan, the Red Sea, Mauritius, Madagascar, South Africa and the sub-Antartarctic Islands. One species, Cellana radiata, is cosmopolitan.

These sea snails feed by grazing on green macroalgae growing on rocky substrate in the intertidal zone. Some of these limpets can live up to 7 years, however most do not get older than 2–3 years. They reproduce by broadcasting their spawn in large, yolky eggs in great numbers (between 20,000 for C. flava and C. denticulata to 230,000 for C. ornata).


Species within the genus Cellana include:[1]

The sources given below, also mention the following species :

Species brought into synonymy


  1. ^ a b WoRMS (2010). Cellana H. Adams, 1869. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=205749 on 2010-10-31
  • Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  • Shell-bearing Mollusca: Gastropoda: Archeogastropoda & Mesogastropoda
  • limpets of New ZealandCellanaPhyleogeography of the (pdf document)
  • Powell A.W.B. (1973). The patellid limpets of the world (Patellidae). Indo-Pacific Mollusca, 3(15):75-206.