This is a very unusual species. We found it crawling on a piling of a pier at night. I had to do a double take and for a while I could not even place this critter on a particular group because it looks so strange. What I knew for sure is that this was the find of the trip, none of the divers and photographers had ever seen it before, and quite frankly we were very surprised to find it on two different books. To my knowledge, this species has only been seen a handful of times, reported from Madang and Milne Bay, Papua New Guinea.
It has very characteristic inflated cerata, in the shape of clubs. Transparent orange with an opaque orange and white pattern at the tip. A row of these cerata are positioned anterior to the rhinophores (as is also observed on all species of Janolus). The rhinophores are lamellated and the same color of the rest of the body, the eyespots can be observed at the base.
John Greenamyer, also on the trip, was able to get video of this amazing find!
Ali probably needs no introduction to most of you, but for the uninitiated, you had better bring a case of energy drinks along to dive with her! If the energizer bunny could dive, he would have nothing on Ali! With all her dive skills, endurance, and sharp eyes, who
needs a Phd to find sea slugs? Well, Ali has that too, if you are wondering! When I do dive with her, I have to keep reminding her of my senior citizen status, if any hope will be realized in keeping up with her! Dreams of youth gone by!