Sipuncula is a feminine variant of the now-obsolete genus name Sipunculus, itself a variant of the Latin siphunculus ("little tube"), a diminutive of sipho from Greek σίφων (síphōn, "tube, pipe").
The Swedish naturalist 展开

Both asexual and sexual reproduction can be found in sipunculans, although asexual reproduction is uncommon and has only been observed in 展开

Because of their soft-bodied structure, fossils of sipunculans are extremely rare, and are only known from a few genera. Archaeogolfingia and Cambrosipunculus appear in the 展开

Sipunculans are worms ranging from 2 to 720 mm (0.1 to 28.3 in) in length, with most species being under 10 cm (4 in). The sipunculan body is divided into an unsegmented, bulbous … 展开

All sipunculid worms are marine and benthic; they are found throughout the world's oceans including polar waters, equatorial waters and the 展开

Most sipunculans are deposit feeders employing a number of different methods to obtain their foods. Those living in burrows extend their … 展开

Sipunculid worm jelly (土笋凍) is a delicacy in southeast China, originally from Anhai, near Quanzhou. A sipunculid worm dish is also considered a delicacy in the islands of the 展开