Coelogorgiidae
Coelogorgiidae is a family of sea pens, colonial marine invertebrates belonging to the order Pennatulacea. They are characterized by their distinctive, often brightly colored, feathery colonies, which are composed of numerous polyps attached to a central stalk. These colonies can range in size from a few centimeters to several meters in length.
Common Names
Coelogorgiidae are commonly referred to as "sea pens" or "feather stars," but they are distinct from true feather stars (Crinoidea). Some species may have specific common names based on their appearance or location.
Characteristics
Coelogorgiidae possess several key characteristics that distinguish them from other Pennatulacea families:
- Colonial Structure: Their colonies consist of numerous polyps, each with a polypite (feeding structure) and a polyp base, attached to a central stalk.
- Autozooids: These are the primary polyps, responsible for feeding and reproduction.
- Siphonoglyphs: These are longitudinal grooves within the polyp’s pharynx, facilitating water flow for feeding.
- Sclerotic Axis: The central stalk of the colony contains a hardened, calcareous axis that provides structural support.
Environment
Coelogorgiidae are primarily found in deep-sea environments, typically on soft substrates like mud or sand. They can also occur in shallower waters, depending on the species. These colonial invertebrates are often abundant in areas with strong currents, where their feathery colonies can effectively capture food particles.
References
For further information on Coelogorgiidae, you can consult the following reliable references: