
Berthellina delicata (Pease, 1861)
Length: 3 cm
Locality: Kotoura, Sado Is. Depth: 8 m
Environment: rocky reef
Water temperature: 10°C
Date: Mar, 2013 Photographer: Satoshi Awata
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Heterobranchia |
| Order | Pleurobranchida |
| 上科 | Pleurobranchoidea |
| Family | Pleurobranchidae |

Length: 2 cm
Locality: Tassha, Sado Is. Depth: 1 m
Environment: rocky shore
Date: Sep, 2021 Photographer: Akihito Omori