It has black spots scattered over the notum. Knobbly paired cerata extend down the margins of the smooth notum. They are thick-set with a finely serrated notum. The notum and cerata may have opaque white encrustations. Its body is apricot-coloured with clusters of white spots on its notum. His siblings are Foof, Jamie, Horse, Pip and Notum. The inverse reaction is done by NOTUM. Numerous branched projections on the notum aid in camouflage, and may be extended or retracted. The dorsal surface of the body of nudibranchs is known as the notum. In entomology, the notum is the dorsal portion of an insect's thoracic segment. Seen from above, the notum shields the insect's head. Notum, palmitoleoyl-protein carboxylesterase is a protein that in humans is encoded by the NOTUM gene.