'The ocean is in trouble'

Renowned US marine biologist Sylvia Earle says demand for shark fin soup is driving many species to the brink of extinction

The US Library of Congress deems her a Living Legend. Over the past five decades, the mother of three has logged more than 7,000 hours undersea, discovering tens of thousands of species of aquatic life. Even at 80, she continues to spend three months a year on ocean expeditions. Her work has earned her the nicknames Joan of Arc of the Ocean, Hero for the Planet, and best of all, Her Deepness.

She is Sylvia Earle.