(Zoöl.) A sertularian hydroid, especially Sertularia abietina, which branches like a miniature fir tree.
| Dictionary: Sea· fir |
(Zoöl.) A sertularian hydroid, especially Sertularia abietina, which branches like a miniature fir tree.
| Analipus | |
| Air fern | |
| Lighthouse tender |