Unidentified Discodoridae

Scientific name : Discodoridae n.c.

Small nudibranch with hard, orange coloured, back. 2 cm.
Unique specimen, photographed in Manado bay.
Observed in bay, on a sandy bottom, 5 m depth, on a sponge.
For the mantle texture it recalls a Discodoris. This could be a new species.

Associated organisms
The only specimen observed was on an Axinella sp. sponge.