[ he flips to a page with an illustration. a pretty lady with a fish butt and tail. ]

They're these. They live in the ocean—they say that some of them make sailors crash their ships by distracting them with songs.

[ and their beauty, but that doesn't seem like a detail he cares about. the drawing in the book is beautiful enough to get the point across. ]

...But this is a love story, I guess. Of one who fell for a human.