PARIS — Penny Oleksiak, the original Canadian diva of the Olympic swimming waters, laughed when she tried to describe the competitive acumen of her 17-year-old heir apparent, Summer McIntosh.

“People always ask if I’m Summer’s mentor or Summer’s looking up to me, but we’re totally different people,” Oleksiak said here at Paris 2024. “She’s on this insane path. She loves her lists. She’s meticulous with everything the does. I take a more laid-back approach to things.”