Courtesy of Ned Denison, Sandycove Island, Ireland.

Catherine Sheridan, an Irish open water swimmer, joined other luminaries of the sport of open water swimming who have given TED Talks around the world: Lynne Cox, Craig Dietz, Kimberley Chambers, Lewis Pugh, Diana Nyad, Maarten van der Weijden, Ori Sela, Vicki Keith, Dr. Peter Attia, Tim Ferriss, Angel Yanagihara, Ph.D., Maria Conceicao, Dr. Tim Noakes, Wallace J. Nichols, Ph.D., Guillaume Néry, and Dana Vollmer.

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