Original: Sipunculans are worm-like animals ranging from 2 t in length , with most species being under 10 c/O. The sipunculan body is divided into an unsegmented trunk and a narrower , retractable anterior section , called the '' introvert '' .
Simplified: Sipunculans are worm-like animals ranging from 2 t in length , with most species being under 10 c/O. The body consists of a narrow front section , called the introvert and a larger trunk section .