Chromodoris baumanni from west Mexico

July 4, 2002
From: Alicia Hermosillo

Dear Dr. Rudman,
I found this Chromodoris baumanni inside a sea cave. It was eating a white sponge I can not identify. As you can compare with my prior pictures of the same species, this one looks more like the ones usually published (a lot like the other pictures here in the Forum). The red one I see all the time.

Locality data: El Morro, Bahia de Banderas, Pacific Coast of Mexico, 87 feet deep and 26mm long.


Hermosillo, A., 2002 (Jul 4) Chromodoris baumanni from west Mexico. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Ali,
It is certainly an interesting colour change. If they were found much further apart I would wonder if they were perhaps mimicking different species much as Chromodoris epicuria does in southeastern Australia. But geographic separation is obviously not the reason for the colour differences in Chromodoris baumanni.
Best wishes,
Bill Rudman.

Rudman, W.B., 2002 (Jul 4). Comment on Chromodoris baumanni from west Mexico by Alicia Hermosillo. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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