Alcyonosyllis phili
This is not nudibranch or sea slug

Photographed by: Gordon Tillen
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Polychaeta |
| Order: | Aciculata |
| Family: | Syllidae |
| Species: | Alcyonosyllis phili |
Comment from Leslie Harris on photo #19000
This is Alcyonosyllis phili (family Syllidae), a commensal on nephtheids & gorgonians and a truly lovely worm.Locality:
- Philippines
- Apo Island (1) Aug