Thuridilla moebii is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusc in the family Plakobranchidae.

Along the upper surface is a bold longitudinal, zigzag band of contrasting colour, usually deep orange above and blackish below (but sometimes all black), uniformly speckled with white dots.

The head is white and bears a pair of large, rolled rhinophores, which extend forward, the tips of which match the colouring of the band on the body.

[2] Thuridilla moebii is found in shallow water in the tropical and subtropical Indo-Pacific region, its range extending from South Africa to Western Australia, including Mayotte, the Comoro Islands, Réunion and Mauritius.

Its habitat includes sandy areas where detritus accumulates, and rocky reefs with scanty coral cover and suitable algal growth.