Find reliable reference information to help answer these QUESTIONS
about this worm's locomotion:

1) Use a twist-tie, as a flexible model, to illustrate and explain how this worm propels itself through water.

RELATED LINKS: 
Background about freshwater oligochaetes
Frame-by-frame analysis of swimming in Dero

Helical swimming in Lumbriculus (another freshwater oligochaete worm)

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