Dendronotus frondosus
(Ascanius, 1774)

Photographed by: Gary McDonald
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Opisthobranchia |
| Order: | Nudibranchia |
| Suborder: | Dendronotina |
| Family: | Dendronotidae |
| Species: | Dendronotus frondosus |
Comment from Gary McDonald on photo #18178
Feb 22, 2011: This is definitely not Hancockia californica. The rhinophores and cerata are not the shape of Hancockia californica rhinophores and cerata; and the velar appendages and the general color of the animal do not correspond to Hancockia californica.Stout, Pola & Valdes (2010:373) suggest the resurrection of the name Dendronotus venustus for eastern Pacific specimens currently
recognized as Dendronotus frondosus.
Comment from Alexander Martynov on photo #2764
Present presumably copulating pair is a good example of an additional proof (along with the morphological characters) for belonging of both white and variegatedforms to single species Dendronotus frondosus.
Comment from Alexander Martynov on photo #2186
this is white form of Dendronotus frondosus. It is quite variable species, but specimens with different colouration have same radula and reproductive system, that have confirmed by a recent study of the specimens from White and Barents Seas.Comment from Alexander Martynov on photo #2466
This species is widely distributed in the Russian seas from Barents and White to Japan Seas, typically intertidal - upper subtidal, probably as an exception was recorded from the depth 300 m. Locality:
- USA
- California (12) Jan, Feb, Apr, May, Nov, Dec
- Washington (3) Jan, May, Oct
- Seal Rock, Oregon (1) Apr
- Oregon (1) May
- Catalina Island (1) Jun
- La Jolla (1) Oct
- Norway
- Norway (4) Jan, Dec
- Russia
- Barents Sea (3) Aug, Dec
- Russia (2) May
- White Sea (2) Mar
- UK
- Canada
- British Columbia (2) Apr, May
- Netherlands
- Zeeland (2) Jul, Sep