Clip | Equus "Story of the Horse" | Episode 2: Chasing the Wind - How Seals Help Wild Horses

The wild horses of Sable Island thrive thanks to the influx of nutrients seals bring to their habitat when they come ashore to mate.

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As far as these horses are concerned, humans don't exist.

Now, they live in partnership with a different animal - Seals!

Every winter half a million grey seals crowd onto the sands to give birth.

And this huge gathering of sea mammals keeps the horses alive.

'So we have seals coming onto the island for weeks where they're pupping, they're mating, and while they're here they're fertilizing the grass.

The influx of nutrients is quite impressive and the horses are responding to this.'

It's a remarkable connection between two mammals who couldn't be less alike.

The seals bring nutrients to these barren dunes and the horses feast on the grass.