Halgerda batangas  Carlson & Hoff, 2000

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Halgerda batangas is characterized by orange-red tipped tubercles, with a network of solid red-orange lines on the dorsum between the tubercles, and a white region around the mantle edge containing orange-capped tubercles. The tubercles have a basal ring of white. This shot shows two specimens mating.
More information on Halgerda batangas are on Bill Rudman's Sea-Slug Forum!