Doriopsilla gemela is a species of dorid nudibranch, a colourful sea slug, a shell-less marine gastropod mollusk in the family Dendrodorididae.

[2] There are five other species that are quite similar to this species and can be confused with it, and they are: Doriopsilla albopunctata (Cooper, 1863), Doriopsilla bertschi Hoover, Lindsay, Goddard & Valdés, 2015, Doriopsilla davebehrensi Hoover, Lindsay, Goddard & Valdés, 2015, Doriopsilla fulva (MacFarland, 1905) and Baptodoris mimetica Gosliner, 1991.

[3] This species was described from the intertidal zone, Hill Street, San Diego, California.

It can be dark yellow to orange in colour, but always with very small opaque white dots.

[3] The rhinophores are orange-yellow in colour with 9 lamellae on the club.