 "C. frankliniana" contains the distasteful chemical chimyl alcohol, and the nudibranch incorporates this into its own tissues, using it as a chemical defence to make itself unpalatable.It is avoided by the predatory starfishes "Odontaster validus", "Perknaster fuscus" and "Acodontaster conspicuus" because the mucus it extrudes is distasteful; it is preyed on by the sea anemone "Isotealia antarctica", but 70% of the encounters between the two result in the nudibranch escaping, or the sea anemone swallowing the nudibranch but then regurgitating it from its gastrovascular cavity.The gelatinous egg ribbons of the nudibranch are also eaten by "I. antarctica" but rejected by "O. validus".