Thysanozoon brocchii

This white-spotted brown flatworm has recently been determined to be T. brocchii, a cosmipolitan species present in the Atlantic Ocean, India, Australia and New Zealand. Aside from its colour and pattern, it can be identified by the papillae covering the dorsal surface of its body, and frilled edges with marginal tentacles. It is very similar in appearance to the nudibranch Carminodoris nodulosa, but as a flatworm, it can of course be differentiated by the lack of rhinophores and gills that are common to nudibranchs.