Teen amputee sails again with 'revolutionary' bionic leg
18 June 2014 Last updated at 21:24 BST
An 18-year-old amputee has been able to sail again thanks to a waterproof prosthetic leg.
Laurence Greenhough lost his leg in a sailing accident when he was 11.
He had tried to sail using crutches afterwards but found it put a strain on his joints.
Now, he has become one of two people outside the military to be fitted with a water-proof bionic leg.