How do caecilians move through soil using their vertebrate anatomy, unlike the worm's hydrostatic movement?

Answer

By using their robust, bony vertebral column to actively bore

Caecilians use their strong vertebral column and specialized skull for leverage, actively boring through the substrate, unlike worms which rely on fluid pressure.

How do caecilians move through soil using their vertebrate anatomy, unlike the worm's hydrostatic movement?

#Videos

Caecilian facts: they're amphibians! | Animal Fact Files - YouTube

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