Cratena cf. affinis

Family: Glaucidae


Hachijo Island, Japan. Upper: 27 Oct. 2002, Length: 4mm, Depth: 8m. Lower: showing head and anterior end - 8 June. 2002, Length: 8mm, Depth: 8m. Photos: Nishina Masayoshi

Very similar in general shape to Cratena affinis but has some significant consistent differences in external shape and colour. In particular it lacks white lines on the cerata and lacks a red patches on each side of the head. It also seems that the flattened rings found on the rhinophores of C. affinis are replaced here by a radiating set of papillae. See messages on this page and the C. affinis page for more detailed discussion on the similarities and differences.

Authorship details
Rudman, W.B., 2002 (December 2) Cratena cf. affinis [In] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

  1. Cratena affinis? from South Africa
    From: Colin Ogden, October 26, 2006
  2. Rhinophore shape of Cratena cf. affinis
    From: Nishina Masayoshi, December 17, 2002
  3. Re: Cratena cf. affinis from Japan
    From: Nishina Masayoshi, December 4, 2002
  4. Cratena affinis from The Japan Sea
    From: Shigeru Hayashi, July 27, 2002
  5. Cratena affinis from Hachijo Is., Japan
    From: Rie Nakano , July 13, 2002

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