Fin swimmer
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Finswimming: Athletes who swim like mermaids

2 April 2011 Last updated at 10:32 BST

They can swim faster than Olympians Rebecca Adlington and even Ian Thorpe, albeit with a little help and are competing in the British championships.

Finswimming is attracting a growing number of youngsters into the sport, perhaps because this is the closest you get can get to being a mermaid.

Mike Bushell reports.