Sharks have roamed the planet’s waters since before the dinosaurs and have evolved into more than 500 species. But only recently have we begun to understand their lives—and how our actions can threaten their survival. Jess Cramp taps into the National Geographic archives to discover the work of 20th-century women leading shark science and storytelling before she dives into her own cutting-edge research and conservation. Swim alongside her under the vibrant waters of the South Pacific to find out what it truly means to save sharks.