Berthella martensi (Pilsbry, 1896) [Gymnotoplax]
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Berthella martensi is highly variable in colour, 3 variants are shown here: orange background colour with black spots,
greyish background colour with brown/black spots, and brown/black background colour with white/yellowish spots.
This sea-slug grows up to 12 cm.
More information on Berthella martensi are on
Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2021), published 11 April 2021, Berthella martensi (Pilsbry, 1896)