species: Chelidonura varians in Lizard Island Field Guide (Lizard Island Field Guide)
Chelidonura varians

©Barbara Banks: Chelidonura varians at Lizard Island

©Barbara Banks: A pair of Chelidonura varians laying egg masses. Fifteen individuals were seen in a small area on this day (16 Sep 2014).

©Tobias Gerlach: Chelidonura varians at Lizard Island
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Order Cephalaspidea
Family Aglajidae
Genus Chelidonura
Species Chelidonura varians



Distinguishing features

Black with a bright blue line on head as well as on body margin; long twin tapering "tails" of unequal length. (Humann and Deloach, 2010)


  • Size data has not been obtained.


Similar taxa


©Atlas of Living Australia: Australian distribution

Web resources


References that assist with identification

  • Humann, P. and N. Deloach (2010). Reef Creature Identification: Tropical Pacific New World Publications Inc., Jacksonville, Florida, USA.

Other references

  • Anthes, N. (2006). Mating conflicts and their evolution in simultaneously hermaphroditic sea slugs, Ph.D. thesis, Eberhard Karls Universitaet Tuebingen, Germany. LIRS catalog number 976.
  • Anthes, N. and N.K. Michiels (2007). Reproductive morphology, mating behaviour, and spawning ecology of cephalaspid sea slugs (Aglajdae and Gastropteridae), Invertebrate Biology, 126: 335-365. LIRS catalog number 1117.
  • View all references