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 Yacult.

This is Scientific American 60-second science. I'm Julia Rosen. Got a minute?

Stick your head underwater and you'll quickly discover that the ocean has a soundtrack.

Waves crash, whales sing, and occasionally an underwater earthquake rumbles from the depths.

Over the last century, however, human activities have added to the din, with consequences

for marine mammals and fish.

Now a team of researchers has investigated whether noise pollution also affects the behavior

of critters that live on the seafloor.

These animals might be small, but they play vital roles in marine ecosystems.

For instance, they churn up ocean sediments and release nutrients that fuel the entire marine food web.

So in terms of their vulnerability to sound, they've been completely overlooked.

Martin Salon, a marine ecologist at the University of Southampton in England.

Salon and his team tested the reactions of common bottom-dwelling creatures to sounds like the hum of ship engines and the clanking of underwater construction.

Their test subjects were manila clams, brittle stars, and lanky lobsters known as langustines.

The researchers found that while the brittle stars seemed impervious to the racket,

the other animals reacted strongly to certain human-made sounds.

If you excuse the pun, the clam kind of clamped up, it closed its valves

and was pretty much stationary throughout the experiment.

...