For Women’s History Month, Atlas Obscura’s Women in Conservation series celebrates women of science who are protecting our planet’s biodiversity in innovative ways. The girl, not even a teenager yet, plunged into the ocean from the boat, trading the easy oxygen of the terrestrial world for air from the tank strapped to her back. At 12, Andrea Marshall was making her last certification dive, a landmark moment in a lifelong obsession with every living thing in the sea and the irresistible world they occupy. “That tiny little biologist inside of…
