Parade for Gertrude Ederle coming up Broadway, New York City, with large crowd watching, 1926. CREDIT: Library of Congress Prints & Photographs Division, Washington, D.C.

While replicating an Olympian’s fine-tuned technique may seem daunting, Ridley said Ederle’s earlier, rawer swimming scenes threw her for more of a loop. “The doggy paddle, honestly, was one ...

Enterprising swimming pool managers tempted thither two distinguished amateur natatory females, Gertrude Ederle, famed near Channel-swimmer, and Aileen Riggin, Olympic fancy-diving champion in 1920.

Sports Actor Daisy Ridley put in some laps to portray swimmer Gertrude Ederle The Star Wars actor trained rigorously for “Young Woman and the Sea,” Joachim Ronning’s movie about the first ...