Capellinia
Capellinia is a genus of tube-dwelling marine worms in the family Pectinariidae. They are commonly known as “fanworms” due to their distinctive fan-shaped feeding appendages. These worms are characterized by their elongated, segmented bodies and their ability to construct protective tubes from sand grains and other sediment particles.
Characteristics
Members of the genus Capellinia typically possess the following characteristics:
- Tube-dwelling: Capellinia worms construct tubes from sand grains, which they cement together with mucus. The tubes are typically U-shaped and provide protection from predators and the elements.
- Fan-shaped feeding appendages: These worms have a pair of fan-shaped structures called "tentacles" or "palps" that are used for filter feeding. The tentacles are covered in cilia, which trap food particles from the water.
- Segmented body: Like all annelids, Capellinia worms have segmented bodies, with each segment containing a pair of parapodia (fleshy lobes) that assist with locomotion.
- Small size: Most Capellinia species are relatively small, typically measuring less than 5 centimeters in length.
Environment
Capellinia worms are found in a variety of marine environments, including:
- Intertidal zones: They can be found in the sandy or muddy bottoms of intertidal areas, where they are exposed to the ebb and flow of the tides.
- Subtidal zones: They are also common in shallow subtidal areas, where they burrow into the sediment.
- Coastal waters: Capellinia worms can be found in a variety of coastal habitats, including bays, estuaries, and harbors.
References
For further information on Capellinia, you can consult these reliable resources: