Der Mensch Als Fisch – Die Abenteuer von Otto Kemmerich friesischer Schwimmpionier is a biography of Otto Kemmerich who arguably took on the greatest cumulative risk of any open water swimmer in history. Kemmerich did many swims unescorted – and finally pushed the envelope too far when he died during a 200 km swim from Denmark to Germany at the age of 66.
Adam Walker (or Mad Adam or Ocean Walker) is a British open water swimmer who is one of the six people in history who have completed the Oceans Seven
