Video 1: a leech swimming
Where do leeches live?
How do they get around without legs?
What do they eat?
How do they find their food?
Video 2: an earthworm burrowing
Where do earthworms live?
How do they get around without legs?
What do they eat?
How do they find their food?
Video 3: a polychaete swimming
a polychaete's mouth - fast forward to 1:04
Where do polychaetes live?
How do they get around without legs?
What do they eat (think about its mouth)?
How do they find their food?
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