Acanthodoris lutea, the orange-peel doris, is a species of nudibranch or sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Onchidorididae. This species is the largest of the northeastern Pacific onchidorids. It is a common species, and it is very noticeable because of its bright coloration, which is aposematic. The species name "lutea" is a Latin word which means an orange-yellow color.

Acanthodoris lutea. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Acanthodoris_lutea.