Species by Order: Hydrozoa: Leptothecatae
| Natural History | ||
|---|---|---|
 |
Aequorea spp. |
Commonly called crystal jellies, they are raised in many aquaria. Generally present during the spring or early autumn. Large blooms occur in British Columbia, but blooms are not common in southern California. The polyp stage is rarely found in the field. |
 |
Clytia lomae |
Medusae seen most often in late summer and early fall. |
 |
Eirene mollis |
Rarely reported. |
 |
Eucheilota bakeri |
The hydroid phase is often found on mollusc shells in intertidal and slightly subtidal zones. |
 |
Eutimalphes brownei |
Known from San Diego Bay in 1909. Few reports since then. |
 |
Mitrocoma discoidea |
Not extremely common in San Diego; most often seen in the late fall. |
 |
Obelia spp. |
The hydroid phase of the life history is better known than the medusa stage. The hydroids grow in branching stalks and are commonly found as part of coastal benthic fouling communities. The medusae are small and are often found during the summer. |
 |
Phialopsis diegensis | |
 |
Ptychogena spp. |
Rare along southern and central Californian coasts. Two different species have been collected in this area. |
 |
Tiaropsidium kelseyi |