Comprehensive DescriptionRead full entry
Sipunculus nudus is considered a cosmopolitan species found in all oceans from intertidal zones to 900 m depth. It is the most known species in this genus. Common and easily collected along the Atlantic and Mediterranean coasts of Europe, it has been studied for many decades by developmental biologists, physiologists, and biochemists (Cutler, 1994). The surface of the trunk of species in this genus has a checked appearance resulting from the intersection of the longitudinal and circular muscles, and has an iridescent pink or sepia color (live specimens).