Caudina
Caudina is a genus of burrowing sea cucumbers within the family Caudinaidae, classified under the class Holothuroidea. These benthic invertebrates are commonly found in marine environments worldwide, particularly in soft sediments like sand or mud.
Common Names
There are no widely recognized common names for Caudina species.
Characteristics
Caudina species are characterized by their cylindrical body shape, with a distinct anterior end and a posterior end. Their body wall is leathery and often covered in small, scattered tubercles. These sea cucumbers have a unique feature – a single, central tentacle located on the anterior end, used for feeding. They also possess a pair of respiratory trees, branching structures used for gas exchange.
Environment
Caudina species are primarily found in shallow, coastal waters, often inhabiting intertidal zones or subtidal environments. They are typically found buried in soft sediments, leaving only the anterior end exposed. Some species may burrow into sand or mud, creating tunnels that can extend several centimeters into the substrate.
References
World Register of Marine Species
A new species of sea cucumber from the southwestern Atlantic
Feeding ecology of the sea cucumber Caudina arenicola (Echinodermata: Holothuroidea)