Sipunculida, Peanut Worm


Scientific Name: sipunculida

Invertebrate Care

Diet: deposit feeders
Aggressiveness: peaceful
Reef Safe: Yes
Relative Care: easy


The sipunculan body is divided into an unsegmented, bulbous trunk and a narrower, anterior section, called the “introvert”. When threatened, Sipunculid worms can contract their body into a shape resembling a peanut kernel—a practice that has given rise to the name “peanut worm”.