Cool! Also learned from another comment that the word "worm" is like "fish" in that it describes a variety of creatures that all look similar but are from different groups of animals.
Interesting, thanks for the fun fact! My kid is absolutely obsessed with learning all things about animals so I’m keeping stuff like this on deck for when he’s a little bit older and can understand. I’ve learned more about animals in the last year watching videos with him than all through school, which is equal parts sad and awesome.