Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Doridoidea
Family : Discodorididae
Distribution : South africa, Tanzania, Madagascar and Réunion Island
Maximal size : 80 mm
Abundance : Seldom on the rocky coast

Species characteristics :

The brownish granular surface of the body is composed of a dense covering of caryophyllidia

The general texture of the animal is leathery, and the whole dorsal surface is covered with a distinctly raised but somewhat irregular reticulate pattern.

Opaque white pigment is present on the notum especially on the elevated , rounded tubercles

See more about : Sightening and mating periods

Remarks :

Identification confirmed by Nathalie Yonow
    Synonymous : (according Worms)
          - No other name

Bibliographic data :

S. coriacea has a greenish grey ventral surface with a network of yellow, and the margin is dirty yellow.  The sole of the foot is yellow brown to light orange.   
    The rhinophore-openings have somewhat raised and indistinctly crenulate edges
    The branchial pocket is wide, conspicuous, and somewhat two-lipped in shape. The edge is turned outwards and is not at all crenulate. The branchia are six and tripinnate.
    Found on the tide pools at night and on shallow reef flat
    Lay a bright orange egg ribbon

References :

Nudipixel Slerodoris coriacea

Publications :

Eliot, C.N.E. (1904) On some nudibranchs from East Africa and Zanzibar. Part III. Proceedings of the Zoological Society of London, Dec 1903, ( 354-385) Plates XXXII.-XXXIV
    Rudman, W. B. (1978). The dorid opisthobranch genera Halgerda Bergh and Sclerodoris Eliot from the Indo-West Pacific. Zoological Journal of the Linnean Society. 62: 59-88.

Philibert Bidgrain

Reunion, Etang salé on the rocky coast, less 1 m, 15 March 2007, size : 60 mm

The brownish granular surface of the body is composed of a dense covering of caryophyllidia

Hugues Flodrops

Reunion, Etang salé on the rocky coast, during the night, less 1 m, 24 February 2009, size ; 30-40 mm

S. coriacea has a greenish grey ventral surface with a network of yellow, and the margin is dirty yellow.  The sole of the foot is yellow brown to light orange.   

The rhinophore-openings have somewhat raised and indistinctly crenulate edges

The branchial pocket is wide, conspicuous. The edge is turned outwards and is not at all crenulate.

Christophe Cadet

Reunion, Etang salé on the rocky coast, less 1 m, 5 September 2009, size : 20 mm

The branchial pocket is wide, conspicuous. The edge is turned outwards and is not at all crenulate.

The branchia are six and tripinnate.

Philibert Bidgrain

Reunion, Etang salé on the rocky coast, less 1 m, 15 March 2007, size : 60 mm

Lay a bright orange egg ribbon

Seb Vasquez

Reunion, Etang salé on the rocky coast, less 1 m, 9 February 20154

During the night

With an original black coloration of the branchia and the rhinophore club