Corymorpha
Corymorpha is a genus of hydroids belonging to the family Corymorphidae. These colonial cnidarians are characterized by their distinctive polyp morphology and unique life cycle. Corymorpha species are commonly found in marine environments worldwide, particularly in coastal waters.
Common Names
Corymorpha species are known by various common names, including "stalked hydroids" and "umbrella hydroids."
Characteristics
Corymorpha species exhibit the typical polyp morphology of hydroids. Their polyps are elongated and cylindrical, with a distinct stalk that attaches them to the substrate. A crown of tentacles surrounds the mouth opening, which is located at the distal end of the polyp. The tentacles are armed with nematocysts, specialized stinging cells that paralyze prey.
Environments
Corymorpha species inhabit a variety of marine environments, including:
- Estuaries
- Rocky shores
- Seaweed beds
- Subtidal zones
They are typically found attached to rocks, seaweeds, or other marine organisms.
Life Cycle
Corymorpha species exhibit a complex life cycle that alternates between a polyp stage and a medusa stage. The polyps are sessile, while the medusae are free-swimming and responsible for reproduction.
References
For further information on Corymorpha, consult the following reliable sources: