Ceratosoma ingozi from South Africa

Dear Charles,
Yes this is Ceratosoma ingozi. This animal is indeed quite different in colour to your earlier photo [message #13049], but species of Ceratosoma are quite variable in colour. As we see more photos of this South African species, I am struck wit its similarity to its southern Australian counterpart C. brevicaudatum, although the posterior tip to the mantle looks more substantial than that species. Your two photos show some interesting features. Firstly we can see it is feeding on the red-brown sponge - a crater-like hole is very obvious. Secondly its mantle glands are concentrated posteriorly and anteriorly. There is a cluster around the posterior end of the mantle edge, and in front of each rhinophore, there is another cluster on each side.
Best wishes,
Bill Rudman