Valerie’s fearlessness of the sea is evident from the start; there’s at least one montage of the diver swimming up to various sea snakes, eels, and more and handling them without hesitation. The sole exception to that bravado, she confesses, was sharks. Starting with early footage from the late ’50s, Aitkens presents a clear picture of Valerie’s slow discovery of shark behavior, intelligence, and even personalities. That progression comes with many early regrets for the Taylors, including many kills of the apex predators. Those who prefer to avoid seeing actual animal violence on screen should be warned; this doc shows multiple shark deaths, first from Valerie’s spearfishing days and more from big game fishing expeditions. There’s also a gruesome photo of a shark attack on survivor and family friend Rodney Fox. Valerie isn’t proud of her former ignorance, and the imagery sells the weight of those acts.