Aglajid sp. 6
House Reef, Tekek Village, Tioman, Malaysia. on a slightly sloping silt/sand bottom between 15 to 20 metres. Approx 5-6 cm long. Photos: Michelle Tay & Jeffree Shahrizal
Although it looks something like a Sea Hare, the presence of a distinct headshield suggests it is some type of cephalaspidean bubble shell, perhaps in the family Aglajidae or Phlinidae. The parapodial flaps are very large, as are the 'tails' off the posterior end of the posterior or visceral hump. I presume there is an internal shell over the visceral hump, and there is a large hole [foramen] into the shell cavity, which is unusual in aglajids. A small pore has been reported in some species of Philine, and a small pore or a larger foramen is present in species of Sea Hare genus Aplysia. One other animal that apparently has such a foramen is Noalda exigua but it was described from a shell alone and I don't know if the one drawing of the live animal available is correctly identified or not [see message #6151 ]. Nothing is known of the anatomy of Noalda, although it is has been suggested that it is an aglajid.
Note added April 2010: see message #23454 for further discussion on possible relationship to Noalda, and N. exigua Fact Sheet for photos of living animal.
Rudman, W.B., 2005 (June 6) Aglajid sp. 6 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/aglajidsp6
Small Noalda? species
From: Atsushi Ono, April 9, 2010
Aglajid sp. 6 - mating and egg case
From: Kwang Kai Leong, March 19, 2008
Aglajid sp. 6 from Bali
From: Daisuke Nakayama, February 14, 2008
Re: Flatworm? from Malaysia
From: Michelle Tay & Jeffree Shahrizal, June 6, 2005
Flatworm? from Malaysia
From: Michelle Tay & Jeffree Shahrizal, June 4, 2005