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Species of the Month June 2007

Celtic sea slug (c) F. Crouch Common name: Celtic Sea Slug

Latin name: Onchidella celtica

A type of sea snail (Mollusca)


Key Features

  • Up to 13 mm long and 6 mm wide.
  • Dark green-black in colour
  • Body (mantle) covered with large, coarse, evenly spaced tubercles (rounded swelling).
  • Head and grey foot obscured by mantle when stationary.
  • Single pair of short tentacles.

Where to look:

Usually found hiding in crevices or empty barnacle shells.

Effects of wamer seas:

May become more widespread.

More information:

Click here find out more about this species on the MarLIN website