Whale story in The Guardian: https://www.theguardian.com/lifeandstyle/2023/sep/29/experience-a-whale-saved-me-from-a-shark-attack

tl;dr: A marine scientist was investigating a pod of whales when a male whale started acting weird and pushing her around. She resisted, until she saw a tiger shark approaching in hunting mode. Once she stopped resisting, the whale pushed her back to her boat, where she was safe.