"New one to me! This crazy nudibranch was not teeny -- about 1"" long. Cream body with brown speckling and cool yellow lines. Large foot. Rows of gills like Dendronotus? Oral tentacles flicked up and down like a cockatoo's crest. BUT THE WEIRDEST THING were these crazy long flowing 'streamers' coming from the top of each rhinophore sheath - kind of looked like worms, though clearly attached and marked like the rest of the body (cream with brown specks). Found on Tubularia. Invasive? Video: https://www.flickr.com/photos/30314434@N06/25521619833/in/dateposted/ Calling out the big guns for help: @tgosliner @mcduck @rebeccafay @sluglust @kestrel @kueda UPDATE 5/16/2016: Here's the very nice video that the California Academy of Sciences created about this guy: https://www.facebook.com/calacademy/videos/10154157032862311/"
This species exhibits wild variation in color. The majority are mottle brown, but there are also pure white morphs, pure orange morphs, and, apparently, this weirdo. There were many, many D. subramosus to be found at Pillar this weekend, easily the most abundant slug.