Marcus, 1963 Jorunna spazzola is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Discodorididae.

[4] Camacho-García et al. (2014)[5] suggested Caribbean animals identified as Jorunna spazzola could constitute a distinct species, because they display external differences with the original description from southern Brazil.

The distribution of Jorunna spazzola includes Florida,[6] Honduras, Costa Rica, Venezuela, Cuba, Curaçao, Barbados, Virgin Islands, Turks and Caicos, Brazil and Panama.

[3] Prey of Jorunna spazzola include sponges of the order Haplosclerida: Callyspongia pallida and Chalinula sp.

[3] This species is able to quickly change colors as a response to unknown environmental cues.