Protaeolidiella atra Baba, 1955
Length: 3 cm
Locality: Ageshima, Kitaebisu, Sado Is. Depth: 18 m
Environment: rocky reef
Date: Jul, 2011 Photographer: Akihito Omori
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Heterobranchia |
| Order | Nudibranchia |
| Suborder | Cladobranchia |
| Family | Pleurolidiidae |
Length: 4 cm
Locality: Red Rock spot, Kitakoura, Sado Is. Depth: 21 m
Environment: rocky reef
Water temperature: 19°C
Date: Nov, 2011 Photographer: Satoshi Awata