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.

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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Colorful corals may be the stars of the reef, but they can't thrive without a huge supporting cast.

The fish perform a load of really important roles on a coral reef.

Tim Gordon, a marine biologist at the University of Exeter.

He says some fish graze on seaweed, clearing space for new corals,

others control whole food chains. But when reefs are bleached or damaged, the fish flee, and the reef

suffers. So how do you get them back? Well, one trick may be to play them the sounds of a healthy,

vibrant reef.

Gordon and his colleagues played that symphony of snapping shrimp and whooping, hammering, croaking fish on underwater speakers for six weeks at a test reef built off the coast of Australia.

And at the end of the trial, twice as many fish were living at that vibrant sounding reef, compared to identically

built reefs outfitted with dummy speakers or no speakers at all. So fish from every level of the food

chain. So herbivores and planktivores and omnivores and even predatory piscivores, we're all being attracted by this sand.

The details are in the journal Nature Communications.

But even though it worked, isn't it sort of false advertising?

Yeah, in a way it is, kind of.

So it's important that we think quite carefully about how we would use this in conservation practices.

So this will only be useful if you're bringing fish into somewhere that it's worth bringing them to.

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