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.

[3] This dorid nudibranch was described from Cayucos, San Luis Obispo County, California.

It lives on the Pacific coast of North America from Cape Arago, Oregon to northern Baja California, Mexico.

[5][6] The orange-peel doris lives in the intertidal and subtidal zones on rocky shores.

It turns the chemicals taken from the bryozoan food into a noxious metabolite which is toxic to possible predators.