Very fat Embletonia gracilis ?

February 14, 2006
From: Yuji Fujie

Hafa Adai Dr.Bill,
We've checked pictures of Embletonia gracilis but, I couldn't find any with cerata like these. Do you have picture of Embletonia gracilis like this in your stocks ?

Locality: Ice Cream, 17 m, Saipan, Northern Mariana Islands, Pacific Ocean, 08 February 2006, The lower side of rock. Length: 20 mm. Photographer: Yuji Fujie

I'd like to know actual name.
Si Yu'us Ma'ase !
Yuji Fujie

Yuji Fujie, 2006 (Feb 14) Very fat Embletonia gracilis ?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Yuji,
I am pretty sure this is Embletonia gracilis. The photos I have used on the Fact Sheet show the way the tip of the cerata is split into four very well, but often the split is not so obvious. Perhaps when they are well fed, the digestive gland swells up and the split is not so clear. I will look out some other photos to show the variation
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Feb 14). Comment on Very fat Embletonia gracilis ? by Yuji Fujie. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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