Hexabranchus aureomarginatus Ostergaard,
|shows animal with densely distributed, but fine, spots that don't contrast sharply with the background; also,
unusually large/old for the species (described by David in the
illustrated position as "....comparable in size to a large orange, or
maybe a small grapefruit — if you were to cut one in half and stick it
to the rock.")
Photo: David Rolla: Three Tables, Oahu; Oct. 2, 2016.