Favorinus japonicus
Baba, 1949

Order: NUDIBRANCHIA
Suborder: AEOLIDINA
Family: Glaucidae

DISTRIBUTION

Found throughout the tropical western Pacific and Indian Oceans.

PHOTO

UPPER: Two animals showing how the colour of the animal changes as the colour of its food changes. The animal on the left has been feeding on green aplysiid eggs for some time and the cerata, containing green pigment from the food, are uniformly green. The animal on the right was previously feeding on pink eggs and has only recently moved to the green egg mass. Only the front cluster of cerata have, up to the time of the photograph, turned green. (Solitary Islands, Coffs Harbour Region, New South Wales. March 1988).

LOWER: Green animal on egg mass of Aplysia. The tiny dots in the egg mass are the individual eggs. In the bottom right corner you can see part of a pink animal, which has only recently moved onto this egg mass. (Solitary Islands, Coffs Harbour Region, New South Wales. March 1988).

PHOTOS: Bill Rudman.

RELATED TOPIC

Defensive colouration in sea slugs

Reference:
• Baba, K. (1949). Opisthobranchia of Sagami Bay collected by His Majesty The Emperor of Japan. Tokyo, p. 1-194, pls. 1-50

Authorship details
Rudman, W.B., 1998 (April 25) Favorinus japonicus Baba, 1949. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/favojap

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