Scientific name: 
Cadlina luteomarginata
Distinctive features: 
White body has a yellow margin and many low tubercles tipped with yellow.
Size: 
max. 1.75 in.
Flat body with a small, rounded tuft of gills at the back of the body. (Similar sp. Hudson’s yellow margin dorid is found only shallow subtidal depths and has larger sensory organs in the front.)