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This is Science Friday.

I'm Flora Lichten.

Today in the podcast, a mysterious creature with a tooth longer than your body.

Oh, yeah. No, it's incredible. I mean, they can grow to 10 feet in length, and they really are a remarkable structure.

We are taking a polar plunge into the science of sea unicorns. I am talking, of course, about narwhals. These are the mysterious Arctic whales

with those long, twirly tusks protruding from their foreheads. They look like a creature out of a

fairy tale, and it turns out we don't know too much about them. They're hard to study, partly because

they live so far north in the remote Arctic.

So an international team of researchers had this idea. They turned to drones to observe them

and learned all these new things about this storied creature. On the horn to tell us more is Dr.

Greg O'Coree Crow, a research professor at Florida Atlantic University based in Boca Raton, Florida.

Greg, welcome to Science Friday.

Thank you for having me.

Okay. Are Narwhal's mysterious?

Yes, I think so. I think they fire the human imagination, as you say, with their incredible

tusks that are truly amazing natural features.

And as you mentioned earlier, you know, they live in quite remote, challenging locations and

are known to few. But fortunately for us, we partnered with indigenous communities in the far

north to set out and learn more about this

incredible animal.

What did you learn about them?

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