Many nudibranchs are thought to exhibit mimicry. I'm aware of only one
example among shelled gastropod. Gosliner, Behrens & Williams (1996, p. 137)
report that the mantles of juvenile Ovula ovum (Egg Cowrie) "appear to mimic
the toxic nudibranch Phyllidia madangensis. When the specimens grow larger
than the maximum size of the nudibranch, they change their appearance."
 
Edmunds, M. 1987. Color in opisthobranchs. American Malacological Bulletin
5(2):185-196.
 
Goddard, J. 1984. Presumptive Batesian mimicry of an aeolid nudibranch by an
amphipod crustacean. Shells and Sea Life 16:220-222.
 
Gosliner, T. M. and D. W. Behrens. 1990. Special resemblance, aposematic
coloration and mimicry in opisthobranch gastropods. In M. Wicksten (ed.).
Adaptive Coloration in Invertebrates. Texas A & M University Press: College
Station, Texas.
 
Gosliner, T. M., D. W. Behrens and G. C. Williams. 1996. Coral Reef Animals
of the Indo-Pacific. Sea Challengers: Monterey, California.
 
Ros, J. 1976. Sistemas de defensa en los Opisthobranquios. Oecologia
aquatica 2: 41:77. [In Spanish, with extensive English summary.]
 
Gary
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