Lucernaria
Lucernaria is a genus of solitary stalked jellyfish, also known as “stalked jellyfish,” “lucernarid jellyfish,” or “sea-bells.” They are characterized by their bell-shaped body, which is typically attached to a stalk that allows them to remain in a fixed position on rocky surfaces or seaweeds.
Characteristics
Lucernaria have a unique morphology compared to other jellyfish species. Their bodies are divided into two distinct parts: the bell and the stalk.
- Bell: The bell is generally flattened and can be shaped like a disc, a bowl, or a bell. It has four radial canals, which extend from the center of the bell towards the edges. Along the outer edge of the bell are tentacles, which are used to capture prey.
- Stalk: The stalk is a flexible structure that attaches the bell to the substrate. The stalk can vary in length, depending on the species, and is typically shorter than the bell. The stalk has a number of longitudinal muscles, which allow it to contract and extend, enabling the lucernaria to move around slowly.
The color of Lucernaria can vary depending on the species and the environment, but they are typically pale or translucent, with hues of pink, brown, or green.
Environment
Lucernaria species are found in various marine environments, mainly in colder waters of the northern hemisphere, including the North Atlantic, North Pacific, and Arctic Oceans. They are typically found in intertidal zones and shallow waters, attached to rocks, seaweed, and other substrates.
References
For further information on Lucernaria, please refer to the following resources: