Berthella martensi (Pilsbry, 1896)

I found these on several occasions in 1980 and 1981, but all in the same area of ledges at Puako, Hawaii, where they were active at night at depths of 5 to 10m. This is a highly variable species, as can be seen in photos from the Marshall Islands or on the Sea Slug Forum, but all the specimens I personally observed in Hawaii possessed this color form.

Sea Slugs of Hawaii
Sea Slug Forum
Marshall Islands Sea Slugs

Created 20 April 2009

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