Chromodoris macfarlandi from California

July 28, 2005
From: Chris Grossman

I took these images of Chromodoris macfarlandi at Ship Rock, Catalina Island, California, USA on July 15, 2005. The depth was about 17 meters. The two different ones here were found approximately 4 meters apart. They were just below the 15 meter thermocline in water of 12 ºC. It was my first time seeing this species.

Locality: Ship Rock, Santa Catalina Island, California, USA. Depth: 17 meters. Length: 6 cm and 4 cm. July 15, 2005. rocky with kelp. Photographer: Chris Grossman

All of the photos from that dive trip can be found here:

Chris Grossman

Grossman, P. C., 2005 (Jul 28) Chromodoris macfarlandi from California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Chris,
It's nice for you to have found two of the Californian 'blue chromodorids' at the same time [see message #14431 ]. Your photos show the distinctive white line, inside the yellow border of the mantle, That white line, and the three longitudinal yellow lines on the mantle, are a sure way to distinguish this species from the other Californian species. As I said with your photo of Mexichromis porterae, photos of this species feeding, or egg-laying would be very welcome
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jul 28). Comment on Chromodoris macfarlandi from California by Chris Grossman. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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