About Nembrotha lineolata Bergh, 1905
Nembrotha lineolata reaches a total length of approximately 70 millimetres (2.8 inches). It has a slender body, with a rounded head at one end and a pointed tip at the end of the foot. The outer body is covered in longitudinal wrinkles, and there is no clear dividing line between the dorsal (upper) and lateral (side) body surfaces. Its oral tentacles are thick and long, while its large conical rhinophores have around 30 lamellae and can be retracted. Three large pinnate branchial plumes sit on the dorsal surface; these plumes cannot be retracted, and the anus is positioned between them. The colouration of this nudibranch varies across its distribution range. Its base body colour is creamy-white, marked with narrow, sometimes broken, longitudinal lines in a range of brown shades. In some areas, these lines may merge to form transverse colour bands. A blue or purple stripe runs along the margin of the foot, and a yellow stripe is often present alongside it. The oral tentacles are blue or purple with a yellow band, and the rhinophores are red (they are sometimes yellow in individuals from the Comoros Islands) with blue or purple sheaths. Nembrotha lineolata is a widespread species found in the Indo-Pacific region, ranging from the East African coast to Australia, Fiji, and the Solomon Islands. Its confirmed range includes Bali, Fiji, Palau, Papua New Guinea, Malaysia, Japan, the Kerama Islands, the Ryukyu Islands, the Philippines, Australia, the Indian Ocean, the Seychelles, Tanzania, and the Comoros Islands.
