Extreme is the story of athletes who go to their edge to find out what they can do. Meet Fergal Somerville ultra swimmer who thinks nothing of a channel swim or a ice water swim in freezing conditions. Fergal is a swimming mentor to those who often fear the open seas but for him a swim hat and google - and his gold lame swimming togs - is often just enough to get him in the mood to do extreme swims and some fun ones too including jumping from the bridges of Dublin's River Liffey for charity. A big-hearted swimmer with a big appetite for swimming challenges.
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