National Geographic will be streaming a new documentary about an unlikely bond between a man and an otter in Shetland.

Billy Mail met Molly, a starving pup, in 2021 when he saw her jumping off a pontoon into the sea near his Shetland home. Mail wanted to see how close he could get to her before she fled. But it turned out that Molly had no intention of running away.

She was starving and alone, Mail said. “She had a lack of fear that was really interesting because otters are normally pretty scared. I think it was just desperation. She needed food.”

But even after she regained her strength and was fending for herself, Molly kept visiting the Mails and became a “breath of fresh air” in their lives.