Polycera japonica    Baba, 1949

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This species has been observed on Reunion Island

Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Polyceroidea
Family : Polyceridae
Distribution : Indo West Pacific
Maximal size : 8 mm
Abundance :

Species characteristics :

Brownish green with dark rings on the velar tentacles and a black line on the dorsal side of the foot

The rhinophores appear disproportionately large and there are short

Three non-retractile gills

polycera japonica
Showing species characteristics...

Photo Alexandre Laporte
Reunion, Etang salé on the rocky coast, less 1 m, 19 February 2016, size : 3-5 mm

Remarks :

  Synonymous (according worms) :
          - No synonymous

Bibliographic data :

In Baba description " a small purple ring down the tip of the frontal processes. Round the base of the branchial plumes is a marked band of purple. Also there is an oblique band of the same colour on each side of the tail." Pattern not observed in all the specimens aot from Japon...

References :

Medslug : Polycera japonica
    Seaslug of Hawaii : Polycera japonica

Publications :

Other photos of Polycera japonica :

Christophe Cadet

Reunion, 9 January 2018,

Probably its spawn...

see Polycera japonica spawn


Christophe Cadet

Reunion, Etang Sale on the rocky coast, less 1 m, 9 December 2012, size : 6 mm



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