Kushimoto, Japan. Photo: Yasuhiro Shirai
Tambja sagamiana (Baba, 1955) has a blue background and orange-yellow spots ringed in black. It also has a orange-yellow band around the foot with an a thin inner line of black.
See Tambja cf. verconis which has a reverse colour pattern.
• Baba, K. (1955) Opisthobranchia of Sagami Bay, Supplement. Iwanami Shoten: Tokyo. 59pp., 20 Plates.
Rudman, W.B., 2002 (July 17) Tambja sagamiana (Baba, 1955) . [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/tambsaga
June 11, 2005
From: Dong Bum Koh
This is a photo of what I think is Tambja sagamiana from South Korea.
Locality: Bum islet. Jeju Island, South Korea. Depth: 18 m. Length: 110 mm. 13 June 2004. Rocky buttom. Photographer: Dong Bum Koh
Dong Bum Koh
firstname.lastname@example.orgKoh, D.B., 2005 (Jun 11) Tambja sagamiana from South Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14000
Yes I would agree that this is T. sagamiana. We now have records from Taiwan and South Korea, as well as Japan.
July 24, 2003
From: Todd Garthwaite
I was surprised to see that The Forum only has two records of Tambja sagamiana. Here are several shots of T. sagamiana, (which I spotted in a shallower area of the same dive site where I discovered 3 specimens of Tambja kushimotoensis, that I am sending in a separate message. This is my first time to see any Tambja species in north-eastern Taiwan.) I must say T. sagamiana is a spectacular animal, and probably the most colorful and exotic nudibranch I have seen off Taiwan’s N.E. Coast thus far!
Site: "The 2nd Wall", FanZai Ao ([Barbarian Cove] N.E. Coast, Taipei County, Taiwan),
13 July 2003, 10:48am
Depth: 12.1 meters. Water temp.: 27 deg. Celsius. Size: approximately 70+ mm.
Peace, love, & nudis
Garthwaite, T., 2003 (Jul 24) Tambja sagamiana from Taiwan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10504
Thanks for these photos. I have included a close-up of the side of the head to show the peculiar sensory organ which we find in species of Tambja. Usually all we see is a dark line, or groove along the side of the head, but when it opens out, this 'pit' is a series of ridges which are presumably chemosensory in function, used for 'smelling'. This organ is also well illustrated in your photos of T. morosa [=T. kushimotoensis'.
July 21, 2002
From: Bob Bolland
Concerning variation of Tambja sagamiana as suggested in a recent post to the Forum, here are two images of Okinawa animals. The color here seems to be relatively constant without much variation (orange or yellow spots).
Upper: Horseshoe Cliffs, Okinawa; 19 Jan '91; photo only, size not recorded; from 49m.
Lower: Seragaki, Okinawa; 22 Dec '96; TL: 80mm; from 43m.
email@example.comBolland, B., 2002 (Jul 21) Okinawa Tambja sagamiana. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7533
July 21, 2002
From: Yasuhiro Shirai
Thanks for your help. Here is a photo of Tambja sagamiana for reference on your Forum. This species is one of the common slugs at Kushimoto, Japan, in winter and spring. On the otherhand Tambja cf. verconis is very rare.
firstname.lastname@example.orgShirai, Y., 2002 (Jul 21) Tambja sagamiana from Kushimoto, Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7543