Halgerda diaphana Fahey & Gosliner, 1999
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Halgerda diaphana is characterized by its white ridges with orange lines.
There can be orange marks between the ridges. The mantle edge has a submarginal
orange band and a margin of intense white. The gills and rhinophores are translucent
white with closely sprinkled black spots.
More information on Halgerda diaphana are on
Bill Rudman's Sea-Slug Forum!