Coryphellina exoptata, which can be translated as the much-desired flabellina or desirable flabellina, is a species of colourful sea slug, a nudibranch, a marine gastropod mollusc in the family Flabellinidae.

[2] This species was described from Madang, Papua New Guinea.

[1] Coryphellina exoptata is widespread throughout the tropical waters of the Indo-West Pacific.

[2] Coryphellina exoptata is typically about 30 millimetres (1.2 in) in length when mature[1] but can reach 48 millimetres (1.9 in).

[2]