A Lesson On Mammals

Synopsis
Seribbon is giving Elizabeth's Pokémon a lesson on mammals with Psydolphin and Sylveon as the models.

Transcript
Finny: Mommy! Mommy! Mommy! I have a question!

Dragonet: Yes, Finny?

Finny: Why does my tail move from side to side when I swim, while Psydolphin's tail moves up and down?