November 1, 2001
From: Nishina Masayoshi
This animal is generally called Bornella japonica in Hachijo because of the number of the cerata. Baba thinks this is not Bornella stellifer. From my observations, B. stellifer grows quite large (sometimes 50mm or more), but the average size of B. japonica is between 20mm to a maximum of 30mm. This is common in Hachijo Island.
Date: 21 Oct, 2001
Location: Hachijo Island Japan
Photo by Nishina Chikako
Nishina, M., 2001 (Nov 1) Bornella japonica? from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5572
This looks the same as the photos in Rie Nakano's message but what is interesting is whether it is the same as the photos in your earlier message. I can't see any sign of the secondary papillae on the large posterior rhinophoral papilla in the animal in your present message, but they can be clearly seen in your earlier message. I wonder if these secondary papillae only appear in larger animals?
Bornella japonica? from the Marshall Islands
From: Scott Johnson, May 25, 2007
Bornella stellifer mating
From: Nishina Masayoshi, October 9, 2002
Bornella japonica? from Hachijo Is
From: Rie Nakano , November 1, 2001
Bornella japonica? from Japan
From: Nishina Masayoshi, September 12, 2001
What is Bornella japonica?
From: Mike An, September 5, 2001