Sylvia Earle, born on August 30, 1935, is an American marine biologist, explorer, author, and conservationist. Known as "Her Deepness," she has dedicated her life to studying and protecting the world's oceans. Earle has led more than 100 expeditions and logged over 7,000 hours underwater, setting numerous deep-sea diving records. She has authored over 200 scientific publications and several books, advocating for marine conservation and the importance of preserving ocean ecosystems. Sylvia Earle's pioneering work has earned her numerous awards and recognition, including the prestigious Hubbard Medal from the National Geographic Society.