He's run the New York, London and Edinburgh marathons on dry land. So he said: "It was a natural progression to complete the course under water."
Will Lloyd run into Nessie?
He's prepared for anything - even meeting the legendary monster. "If I do meet Nessie, I'm not sure who will be more scared, the monster or
myself," he said.
Lloyd, who started running for charity after he recovered from leukemia, is training in a special diving pool in Fort William, which even has a fake shipwreck in it.
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