Wild World Special

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The aim is to get the sea grass back to where it was a hundred years ago. Tim Ferrero talks about seeds we might see actually taking from all those hessian bags that you've planted into these mud flats. And some of the challenges as well, whether it's the weather or the alge i mean, is this potentially a fool's errand? This episode has been part of a special series from the guardian wild world, taking a look at re wilding efforts around the globe.

They support an incredible array of biodiversity and may also be some of the world’s most effective carbon sinks. But vast swathes of seagrass meadows have been lost in the last century, and they continue to vanish at the rate of a football pitch every half hour. Madeleine Finlay makes a trip out of the Guardian office to visit a rewilding project in Hampshire. She speaks to marine biologist Tim Ferrero about the challenges of replanting seagrass meadows and what hope it offers.. Help support our independent journalism at theguardian.com/sciencepod