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

©Barbara Banks: Chelidonura pallida photographed at Hope Island, south of Lizard Island.

©Barbara Banks: Chelidonura pallida at Eagle Island near Lizard Island.

©Brogan Mancell: Chelidonura pallida at Clam Garden, Lizard Island.
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Order Cephalaspidea
Family Aglajidae
Genus Chelidonura
Species Chelidonura pallida



Distinguishing features

White with thin marginal bands of yellow then black. The two "tails" are of unequal length and often taper to a point.


  • Up to 5 cm (Humann and Deloach, 2010)



©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.
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