Double amputee to receive mermaid tail for swimming

Wouldn't it be cool to swim a workout with mermaids or "mermen" in your lane. (Except when doing 'fly sets.) I think this appliance or an adaptation thereof could make swimming accessible for Iraq war veterans and other disable people. From the Daily Mail:

"... Double amputee Nadya Vessey will soon be able to swim like a mermaid with a specially-made tail that will let her propel herself through the water.

The keen swimmer is to be fitted with the "mermaid-style" tail made by the same special effects team behind blockbuster Lord of the Rings and King Kong." [Link]