Its body is covered in papillae, fleshy protuberances used for sensory functions, giving it the appearance of a furry animal.

[4] There are multiple colorations of Jorunna parva, including yellow, white, and green, though the latter is rarely photographed.

[5] Like most other members of its genus, Jorunna parva's diet consists of toxic sponges in the family Chalinidae.

Jorunna parva has subsequently been reported from the Philippines, Tanzania, Papua New Guinea, Seychelles and Réunion but there are some doubts as to whether it is really a species complex.

[7] The Jorunna parva are concentrated in areas where there is an abundance of food and where resources are easily acquired.