Nadya Vessey, a double amputee since childhood, now has a unique new proshetic to help her swim better.
It's a mermaid tail.
A couple of years ago, she wrote to the prosthetic department of a special effects company, Weta Workshop. Weta made the mermaids' tails for the 2003 version of Peter Pan.
"We have, over the years, done a number of things like this for people that have disabilities," a member of the Weta prosthetics department said.
The tail they made for Vessey was covered in a wetsuit fabric with added digitally-printed fish scales on it. The tail has four sections that allow some movement.
Pretty cool, huh?