| Answer | Crossword Clue |
|---|---|
| MOSS | Fuzzy growth on rocks |
| LICHEN | Growth on rocks |
| MOSS | Growth on rocks |
| LICHEN | Growth on trees and rocks |
| GREENALGAE | Growth on wet rocks or the surface of stagnant water |
| obelias | colonial hydroid of the genus Obelia, common in temperate seas and appearing as a delicate, mosslike growth on rocks, pilings, etc. |
| obelia | colonial hydroid of the genus Obelia, common in temperate seas and appearing as a delicate, mosslike growth on rocks, pilings, etc. |
