Pseudobornella orientalis
Baba, 1932

Family: Bornellidae


Known from Japan, and reported on the Forum from the Philippines


Ose Beach, Suruga Bay, Izu Peninsula, Japan. 5 April 2002, length approx 25mm. Photo: Pamun

See separate page for Anatomical Information

Described from 2 preserved specimens, 7mm long, little published information is available, except for the original anatomical description, and a recent photo in Okutani (2000: Marine Mollusks in Japan, p 798). The most distinctive external feature is the development on the rhinophoral sheath of a long slender tentacle, which can extend to at least twice the length of the body. The translucent whitish body has scattered brown spots and some yellow diagonal streaks. Baba reported that it was found feeding on the hydroid Tubularia mesembryanthemum attached to Zostera.

• Baba, K. (1932) Pseudobornella orientalis, nov. gen. et sp. from Japan. Annotationes Zoologicae Japonenses, 13: 369-376.

Authorship details
Rudman, W.B., 2002 (April 8) Pseudobornella orientalis Baba, 1932. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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