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An unlikely team of researchers and, get this, tiger sharks, has discovered the world's largest

seagrass ecosystem.

It's been hiding in plain sight just off the coast of the Bahamas.

The results appear in nature communications.

This is Scientific Americans Science Quickly.

I'm Joseph Palladuro.

As ecosystems go, seagrasses are right up there with rainforests and coral reefs. But it's actually one of the most important hubs or magnets for

biodiversity. Austin Gallagher is a marine biologist and CEO of Beneath the Waves, an ocean conservation

nonprofit.

Seagrasses are nurseries to a fifth of the world's largest fisheries and are shelters for thousands of species.

They protect other habitats and coastlines, and they store enormous amounts of carbon that would otherwise be released into the atmosphere.

It's sort of this, you know, incredible unsung hero of ocean conservation.

But as much as half the world seagrass is yet to be found,

we're protecting these critical ecosystems with surveys that are as accurate as an early Renaissance map of the new world.

That's because unlike mangroves and warm water coral reefs,

seagrass meadows aren't always picked up by satellite or airplane observation.

Cloud cover and glare from the seafloor also keep the Bahamas seagrass hidden.

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