| In nature scallops settle on epibenthic hydroids and other filamentous organisms, which likely would be vulnerable to intensive raking. |
| Colonies may be mistaken for hydroids, corals, or even seaweeds. |
| In hydrozoans, the polyp phase is more conspicuous than the medusa phase in groups such as hydroids and hydrocorals. |
| On the walls are a riot of soft corals, sponges, hydroids and anemones in all shapes and sizes. |
| It feeds mainly on sponges, but also takes tunicates, algae, zoantharians, gorgonians, hydroids, bryozoans, and seagrasses. |
| He and his colleagues worked primarily on hydroids and planarians. |
