A

David

Darling

Sipuncula

Sipuncula

Peanut worm.


Sipuncula is a phylum of sausage-shaped marine worms that attain a length of 25–300 mm (1–12 in). They are related to the Annelida (true worms) but differ from members of that phylum by having an unsegmented body and lacking the bristles called chaetae.