You probably think you know a lot about mermaids, right? Fish tails, they breathe underwater, strategically-placed shells as bras, etc. etc. You, friend, are wrong.
Let Chloë Grace Moretz prove to you how wrong you are. We quizzed our latest cover star—who was recently cast as Ariel in the upcoming live-action remake of The Little Mermaid—about all things mermaids, and she failed miserably. Fiiiiiine, the quiz was *really* hard. And she was an adorably good sport. And we don't know about you, but we have even more of a girl crush on her now than before.
Watch the cuteness above, and be sure to pick up our February issue, on newsstands now.
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![](https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/gettyimages-1187863625.jpg?crop=0.782xw:0.695xh;0.0913xw,0.0513xh&resize=480:* "Netflix's "6 Underground" New York Premiere")
