Triopha catalinae
(Cooper, 1863)

Photographed by: Gary McDonald
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Opisthobranchia |
| Order: | Nudibranchia |
| Suborder: | Doridina |
| Family: | Polyceridae |
| Species: | Triopha catalinae |
Locality:
- USA
- California (17) Jan, May, Jun, Jul, Aug, Oct, Dec
- Washington (2) Jul, Sep
- Santa Cruz Island (1) Dec
- Anacapa Island (1) Jan
- Oregon (1) Mar
- Canada
- British Columbia (5) Mar, May, Jun, Nov
- Port Hardy (1)
- Russia
- Peter the Great Bay (4) Dec