| Cnidarians of the genus Obelia form colonies of polyps in their asexual generation. |
| This is a slide of Obelia, a colonial marine cnidarian that shows a distinct polymorphism in the organization of its members. |
| Sketch the Obelia Cnidaria medusa Obelia Medusae slide and label the bell, Deerhorn coral skeleton mouth, and tentacles. |
| In the coelenterate Obelia, the egg develops into a colonial hydroid consisting of a series of branching Hydra-like organisms called polyps. |
| The most abundant settlers at the oyster site were the hydroid Obelia sp. |
| This slide shows a medusa from the colonial cnidarian Obelia. |
