|Common Name||Brown orange-eyed nudibranch|
Question by Johan Swanepoel:
At first I though this may be the Elegant Nudibranch (Cratena sp.1) (Nudibranchs of the Cape Peninsula and False Bay page 97) or the Orange Eyed nudibranch (Cratena capensis) (Page 96) but the cerata seem too dense on the photos. Can this perhaps be the Indian Nudibranch (Aeolidiella indica) (page 99)? If you look on the one photo you will see the orange spots on the head.
This is Cratena sp.4, a barely known species found in your area.
A few similar species exist, as shown in the images. Visually they differ only in relatively small, but distinctive, details.
For more details on these nudibranchs (except Cratena sp.4, which does not occur in the Cape Peninsula), see "Nudibranch of the Cape Peninsula and False Bay", available directly from SURG or better dive and book stores in Cape Town