The 'Shark Lady' who proved predators were more than just monsters

Nature · Published 18 October 2026 Swipe more like this →

In short: Before the 1970s, sharks were dismissed as mindless, deadly gangsters of the deep. Eugenie Clark spent a lifetime dismantling this myth. From discovering 'sleeping' sharks to training them for intelligence tests, she transformed how humanity perceives one of our ocean’s most misunderstood inhabitants.

Born in 1922 to a Japanese mother and an American father, Eugenie Clark was driven by an early fascination with the New York Aquarium. Despite facing significant institutional sexism—including being barred from overnight trips or research expeditions at the Scripps Institution of Oceanography because she was a woman—she became a pioneer in marine biology. She earned her Ph.D. from New York University in 1950, focusing on tropical fish reproduction, and later founded the Cape Haze Marine Laboratory (now Mote Marine Laboratory) in Florida in 1955.

Clark’s research fundamentally shifted scientific understanding of shark physiology and behavior. She discovered that certain species do not need to swim continuously to breathe, a finding made possible by her exploration of undersea caverns off Mexico's Yucatán Peninsula. Furthermore, she proved sharks possess higher intelligence than previously believed by training various species to push targets for food rewards. Her work also led to the discovery of a natural shark repellent produced by secretions from the Red Sea Moses sole.

Beyond the laboratory, Clark was a master communicator who used her fame to advocate for conservation. Having contributed pieces to National Geographic, she furthermore instructed Japan's future Emperor Akihito in snorkeling techniques. By bridging the gap between complex science and public perception, she helped shift the narrative from fear to appreciation. Her legacy remains a testament to persistence, as she continued to conduct deep-sea dives into her nineties, proving that curiosity is a lifelong pursuit.

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