Ceratosoma alleni. This was the first time this animal had ever been photographed in Indonesia. Funny thing was, I showed it to a super keen marine life enthusiast/shooter who was about to pass on it, he only saw the two emperor shrimps on its back (of which we\'d already seen plenty), on seeing his reation I had to make sure he knew what it was a nudibranch by giving him the two fingers. All of a sudden there was a frantic rush and sand particles everywhere as an excited diver went nuts photographing this super rare animal...