The Final Strait
In 2014, Walker took on the Cook Strait. The waters between the North and South Islands of New Zealand are known to be the most unpredictable waters in the world. During the swim, Walker felt anxious, because he had no idea what was about to happen before he reached the finish line...
A Nearby Fin
About three hours into the swim, Walker saw a fin swim past him. Then, he felt the creature dive beneath him. He was scared - was he being pursued?
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