Branchiomma
Branchiomma is a genus of marine polychaete worms in the family Pectinariidae. These worms are commonly known as “fanworms” or “sand-mason worms” due to their distinctive feeding structures. They are found in a wide range of marine environments, primarily in coastal areas and estuaries.
Characteristics
Branchiomma species are characterized by their unique feeding apparatus, a pair of long, branched tentacles called "branchiae," which are used to filter food particles from the water. These tentacles are supported by a series of long, thin spines called "setae." The worms also possess a funnel-shaped tube made of sand grains and other detritus, which they construct and use for protection and as a base for feeding.
The body of a Branchiomma worm is divided into segments, with each segment bearing a pair of parapodia, fleshy appendages that aid in movement. The worms are typically small, ranging from a few millimeters to several centimeters in length. They are often brightly colored, with hues ranging from red, orange, and yellow to green and brown.
Environment
Branchiomma species are found in a variety of marine environments, including:
- Coastal areas
- Estuaries
- Intertidal zones
- Subtidal zones
- Seagrass beds
- Coral reefs
They prefer habitats with soft substrates such as sand, mud, or gravel, where they can construct their tubes. Branchiomma worms are often found in association with other benthic invertebrates.
References
For further information on Branchiomma, you can refer to the following resources: