Coryphellina exoptata, which can be translated as the much-desired flabellina or desirable flabellina, common name âÂÂColeâÂÂs nudibranchâÂÂ, is a species of colourful sea slug, a marine gastropod mollusc in the family Flabellinidae.
This species was described from Madang, Papua New Guinea. Coryphellina exoptata is widespread throughout the tropical waters of the Indo-West Pacific.
Coryphellina exoptata is typically about in length when mature but can reach .