Phlyctenactis sp.
This is not nudibranch or sea slug

Photographed by: Michael Henke
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Anthozoa |
| Order: | Actinaria |
| Family: | Actiniidae |
| Species: | Phlyctenactis sp. |
Comment from Richard Willan on photo #2129
This is a species of wandering sea anemone (Cnidaria: Anthozoa: Phlyctenactis sp.) with its tentacles completely withdrawn.Locality: