Chiridotidae
Chiridotidae is a family of sea cucumbers belonging to the order Dendrochirotida. They are commonly known as “burrowing sea cucumbers” due to their habit of living in burrows within soft sediments. These echinoderms are characterized by their elongated bodies, which can range in size from a few centimeters to over a meter in length. Their bodies are often covered in small, scattered spines or tubercles.
Common Names
Chiridotidae are known by various common names, including:
- Burrowing sea cucumbers
- Spoon worms
- Sand cucumbers
Characteristics
Chiridotidae possess several distinguishing characteristics:
- Elongated body: Their bodies are typically long and cylindrical, tapering at both ends.
- Oral tentacles: They have numerous oral tentacles, which are branched and tree-like, used for feeding.
- Burrowing behavior: They are adapted for burrowing in soft sediments, with their bodies often being covered in sand or mud.
- Reduced tube feet: Compared to other sea cucumbers, they have fewer and less prominent tube feet.
- Respiratory trees: Like other sea cucumbers, they have respiratory trees, which are internal structures that allow them to breathe.
- Cuvierian tubules: They possess Cuvierian tubules, sticky threads that are ejected as a defense mechanism against predators.
Environment
Chiridotidae are found in various marine environments worldwide, including:
- Shallow coastal waters: They are commonly found in intertidal zones and shallow subtidal areas.
- Deep sea: Some species inhabit deep-sea environments, up to several thousand meters in depth.
- Soft sediments: They prefer soft sediments, such as sand, mud, and silt, where they can burrow and find food.
References
For further information about Chiridotidae, consult these reliable sources: