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.

.jp. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacolt. This is Scientific American 60 Second Science. I'm Pachina Ma'amir.

Clicks, clucks, grunts, and snorts. These are not sounds that we typically associate with turtles.

They're actually thought to be very quiet or even silent. But it looks like we may

have grossly underestimated how much sound they can make. Now, a new study in nature communications

has collected vocal recordings from 53 species of turtles and other animals that were

otherwise considered to be mute.

Those clicks you've just heard were calls made by baby giant Amazon river turtles,

swimming together and vocalizing.

A group of evolutionary biologists and other scientists in five different countries poured over these recordings and combined them with vocal repertoires of about 1,800 animal species from other studies.

They were able to piece together evidence that the last common ancestor of all lung fish and tetrapods

started vocalizing more than 400 million years ago.

And just in case you're not familiar, tetrapods are four-limbed vertebrates that include amphibians, mammals, birds, and reptiles.

That's at least 100 million years earlier than previous studies had suggested.

The New Revelations amount of rewriting of the acoustic

history of animals with backbones. I did field work in the Brazilian Amazon with a researcher

that published one of these first papers showing that the turtles can communicate acoustically.

And that inspired me. So I went back home and I got piece of equipment and I started

recording my own pets and I discovered that they were producing sounds as well and the species I had

...