The Seamstress Who Solved the Ancient Mystery of the Argonaut, Pioneered the Aquarium, and Laid the Groundwork for the Study of Octopus Intelligence

“I armed myself with patience and courage, and only after several months managed to dissolve my doubts and see my research crowned with happy confirmation.”

Jeanne Villepreux-Power (September 24, 1794–January 25, 1871) was eleven when her mother died. Just before her eighteenth birthday, she set out for Paris from her home in rural France, on foot — a walk of more than 300 kilometers along the vector of her dream to become a dressmaker. On the way, the cousin assigned as her travel guardian assaulted her and fled with her identity papers. Jeanne made her way to a convent and, as soon as she managed to have new travel documents made by local police, kept going. But by the time she made it to Paris, the position she had been promised was already taken. The only job she could secure was as a seamstress’s assistant.

Four years and thousands of dresses later, Jeanne was tasked with outfitting a duchess for a royal wedding. At the ceremony, she met and fell in love with an English merchant, married him, and moved with him to the harbor city of Messina on the island of Sicily. There, she immersed herself in passionate reading about geology, archeology, and natural history — the closest a woman could get to a scientific education at the time — and set out to study the island’s ecosystem.

Walking the shoreline and wading into the sea in her long skirts, she fell in love with one of Earth’s most alien life-forms: the small sepia-like octopus Argonauta argo, known as paper nautilus for the thin, intricately corrugated shell of its females and the sail-like membranes protruding from it like a pair of bunny ears.

The argonaut had fascinated naturalists since Aristotle with the mystery of its spiral shell.

They wondered whether the animal made it, or, like the hermit crab, inherited as a hand-me-down.

They wondered why only the females had a shell, why its shape was so unlike that of the animal body it housed, and why the dweller could completely detach from the shell like no other mollusk did, yet never abandoned it.

They wondered how the shell managed to quadruple in size during the five-month reproductive period — an astonishing feat of on-demand engineering ...