Aldisa tara
Millen in Millen & Gosliner, 1985

Suborder: DORIDINA
Family: Dorididae


Northeastern Pacific. Known from a very limited geographic area having been collected only at Porlier Pass, Fearnie Bluffs, Agamemnon Channel and Earls Cove, British Columbia, Canada.


Fearnie Bluffs, Agamemnon Channel, 35 feet, British Columbia, Canada, Pacific, 11 February 2006, Rocky wall. Length: 15mm. Photographer: Marli Wakeling.

Like other northeastern Pacific Aldisa the body is covered with low conical tubercles.  It differs in being completely white.  Rhinophores and gills are the same color as the notum.  Spicules can be seen within the tubercles.

Surprisingly this species feed on the red sponge, Hamigera.  Adults reach 12-27 mm in length. 

  • Behrens, D.W. & A. Hermosillo.  2005.  Eastern Pacific Nudibranchs - A guide to the opisthobranchs from Alaska to Central America.  Sea Challengers.   137 pp.
  • Millen, S. V. and Gosliner, T. M. (1985) Four new species of dorid nudibranchs belonging to the genus Aldisa (Mollusca: Opisthobranchia), with a revision of the genus. Zoological Journal of the Linnean Society, 84: 195-233.
Authorship details
Behrens, D.W., 2006 (March 24) Aldisa tara Millen in Millen & Gosliner, 1985. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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