This was a relatively rare species. My records indicate I saw about 10 specimens, all at Magic Island, where they would crawl about in the open during the day. The largest specimens reached about 60mm.
The next one is a small specimen, only about 25mm long.
A closeup shows the intricate pattern.
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Slugs of Hawaii
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Slug Forum
Marshall Islands Sea Slugs
Created 20 April 2009