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This species has been observed on Reunion, Mauritius, Mayotte and Madagascar

Order : Nudibranchia Suborder : Euctenidiacea Superfamily : Phyllidioidea Family : Dendrodorididae Distribution :Tropical and warm temperate Indo-West Pacific. Maximal size : 80 mm Abundance : From time to time on the rocky coast Species characteristics : Brown and white fleshy tubercles with bright blue spots in brownish depressions between the tubercles Large tripinnated gills with dark brown axes and numerous little white dots on the outer face. Lamellated rhinophores with brown coloration and white tips
	Showing species characteristics...	Photo Philibert Bidgrain Réunion, Etang salé on a rocky coast, 27 November 2007, size 45-50 mm

See more about : Sightening and mating periods
   See more about : Mating behavior by Hugues Flodrops
   See more about : Dendrodoris krusensternii variability in Southwest Indian ocean

Remarks :

Identification confirmed by Bill Rudman
    Synonymous : (according Worms)
          - Doris denisoni Angas, 1864
          - Dendrodoris denisoni (Angas, 1864)

Bibliographic data :

Found on shallow reefs in the open or under rocks, occasionally found in deep water trawls (1 à 120 m)
    The egg mass is a white ribbon
    Species of Dendrodoris lack the special teeth ( radula) found in most sponge-feeding dorids and feed by releasing digestive juices out of their mouth so that the nearby sponge dissolves into a "soup" which can then be sucked into their mouths.
    If you see a photo of an animal with very swollen rhinophore stalks and disproportionately large gills, you can be pretty sure it is a species of Dendrodoris.

References :

Bill Rudman Seaslug site : Sea Slug Forum : Dendrodoris denisoni
   Nudipixel Dendrodoris denisoni

Publications :

Angas, G.F. (1864). Description d'espèces nouvelles appartenant à plusieurs genres de Mollusques Nudibranches des environs de Port-Jackson (Nouvelles-Galles du Sud), accompagnée de dessins faits d'après nature. Journal de Conchyliologie, 12 : 43-70.
    Valdés Á. & Fahey S.J. (2006) Dorid nudibranchs described by J.E. Gray in M.E. Gray, 1842-1857 (Mollusca Opisthobranchia). Records of the Western Australian Museum Supplement 69: 95-102. page(s): 99

Other photos of Dendrodoris krusensternii :

	Gills detail : Large tripinnated gills with dark brown axes and numerous little white dots on the outer face.
	Philibert Bidgrain Réunion, Etang salé on a rocky coast
Rhinophores detail : Lamellated rhinophores with brown coloration and white tips	Detail of the brown and white fleshy tubercles with bright blue spots in brownish depressions

Nathalie Rodrigues   Mauritius, Water lili and Emilie wrack, at Trou aux biches, 11 march 2017, size : 10 mm

Nathalie Rodrigues Reunion, Saint pierre lagoon, less 1 m, 10 January 2013,	Foot and underside of the foot with an intense purple coloration

Philibert Bidgrain Réunion, Etang salé, on the rocky coast, less 1 m, 11 December 2006, size : 40 mm

Philibert Bidgrain Réunion, Etang salé on a rocky coast, less 1 m, 18 February 2010, size : 30 mm A strange tubercle arrangement for this specimen...Absence of large fleshy tubercles An anormal rhinophoral sheath (a) on the left side

Nathalie Rodrigues   Mauritius, Water lili and Emilie wracke, at Trou aux biches, 11 March 2017, size : 10 mm

See more about : Mating behavior by Hugues Flodrops

See more about : Dendrodoris krusensternii variability in Southwest Indian ocean

Reunion, Dendrodoris denisoni, at Etang Salé, by Philibert Bidgrain

Reunion, Dendrodoris denisoni with large tubercle, at Etang salé, by Alain Barrére

Reunion, Dendrodoris denisoni, at Etang salé, by Philibert Bidgrain

Reunion, gill details of Dendrodoris denisoni, at Etang salé, by Philibert Bidgrain 

Madagascar, Dendrodoris denisoni, at Sainte Marie, by Sully Bachel  

Mayotte, Dendrodoris denisoni, at Mboueanatsa, by Eva Fontaine