Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.com.j.

That's y-A-K-U-L-T dot-C-O-J-P.

When it comes to a guide for your gut, count on YacL.

This is Scientific American 60-second science.

I'm Julia Rosen.

Bye, buddy. Hope you find your dad.

Thanks, Mr. Narwhal.

In real life, Narwhals don't speak English,

like the one bidding farewell to Will Ferrell's character in the movie Elf.

Instead, they sound more like this.

Okay. movie elf. Instead, they sound more like this. That's an audio clip recorded by scientists last summer under the icy waters of Northwest Greenland.

If we want to describe what animals are doing, we first better understand what sounds are telling us.

Yvgeny Podolsky, a geophysicist at Hokkaido University in Japan.

Podolsky and his colleagues study the soundscape of glacial fjords.

There are noisy places where icebergs crash into the ocean and air bubbles fizz out of melting ice.

These fjords are also home to narwhals. The animals are sometimes

called unicorns of the sea because of their single long spiraled tusk, and they're shy, which makes

them hard to study. So Podolski teamed up with local Inuit hunters who snuck up on narwhals in kayaks

and captured audio. That's the sound of a narwhal looking for food using echolocation, like a dolphin or a bat.

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